From akhorshidi at live.com  Sun Feb  2 09:49:56 2014
From: akhorshidi at live.com (A Khorshidi)
Date: Sun, 2 Feb 2014 12:19:56 +0330
Subject: [Scilab-users] export graphics to EMF
Message-ID: <DUB112-W2187BE37E7059C1AC0CA76A3A80@phx.gbl>

Hello; 

I wanna export Scilab graphics directly into emf format but xs2emf function returns unexpected error message! 

-->  plot2d();
 
-->  xs2emf(0,'plotex.emf')
 !--error 10000 
xs2emf: Unable to execute pstoedit.
at line      95 of function xs2emf called by :  
  xs2emf(0,'plotex.emf')
  
  
  
Before using this function, It's necessary to install the following software:
ImageMagick-dynamic
PStoEdit
Ghostscript

Moreover we need to edit path names to point to the correct files. So I modified the file "xs2emf.sci" as below: 
line# 52: if fileinfo("C:\Program Files\gs\gs9.07\bin\gsdll32.dll") == [] then
line# 70: pstoeditPath = "C:\Program Files\pstoedit\pstoedit.exe";

Also there is an related bug report on bugzilla. Please see: http://bugzilla.scilab.org/show_bug.cgi?id=11853
So, how can I overcome this issue?! 

However, I can use pstoedit from other software such as GSview and it convert eps files to emf properly. 
Furthermore, it has been mentioned that PStoEdit has a DLL which can be used directly by GSview!  (see GSview's homepage) 


Merci,  
Mehran
_

 		 	   		  
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From akhorshidi at live.com  Sun Feb  2 10:05:01 2014
From: akhorshidi at live.com (A Khorshidi)
Date: Sun, 2 Feb 2014 12:35:01 +0330
Subject: [Scilab-users] clc() icon with additional functionality !!?
Message-ID: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>



Hi folk; 

 

The addition of the clc() icon was a good idea but clearing console by using
clc() command is quicker than that icon.

So I decided to change the usage of that icon on my Scilab so that the
newer one can clear local and global variable as well as clearing console. 

 

Here is my changes: 

SCI>modules>gui>etc>main_toolbar.xml:

 

    <button icon="edit-clear"
tooltiptext="Clear All">

        <callback 

                                        instruction="

                                                        clc();


                                                        clear();

                                                        clearglobal();

                                                        resethistory();

                                                        chdir()"


                                        type="0"/>            

    </button>

        

 

After restarting Scilab, the new clc icon must can do all the above
tasks but it cannot clear local and global variables! 

 

Actually, I think, the "instruction" attribute cannot perform
some scilab commands sush as : clear(), clearglobal(),..

However there are many instructions which work fine: clc(),
resethistory(), chdir(),..

 

So where is the problem?

 

Thanks in advance.
Be free and opensource! ;)


Mehran

_

 		 	   		  
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From sgougeon at free.fr  Sun Feb  2 13:50:41 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Sun, 02 Feb 2014 13:50:41 +0100
Subject: [Scilab-users] clc() icon with additional functionality !!?
In-Reply-To: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
References: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
Message-ID: <52EE3F21.2000701@free.fr>

Hi Mehran,

Le 02/02/2014 10:05, A Khorshidi a ?crit :
> The addition of the clc() icon was a good idea but clearing console by 
> using clc() command is quicker than that icon.
Even without the (), it is quicker for me to click the icon. And for 
newbies (as students, many students..)
that do not know clc, the icon is explicit. May be are you using a padd 
rather than a mouse ;)

> So I decided to change the usage of that icon on my Scilab so that the 
> newer one can clear local and global variable as well as clearing 
> console.
>
Are you coming from Matlab? Matlabers and former ones use very often 
/clear all/, /close all/  at the beginning of their scripts.
I do not know where this "hygienism" is coming from. clear  is much more 
brutal in Scilab
than in Matlab. I never used them in the head of my scripts for 16 
years, and i have never had problems for that.
Some students or colleagues knowing a bit or a lot Matlab and this habit 
and coming to Scilab keeping the same
have problems with that (but they do not know that this is the reason), 
since then libraries (sometimes local, loaded
from ATOMS, etc) are also cleared, etc, and then many things get harder 
;) Indeed, embedded Scilab libraries are
automatically restored when first calling one of their functions, but it 
is not the case for other external libraries.

So, definitively, i will keep the clear icon as is.

Cheers
Samuel

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From sgougeon at free.fr  Sun Feb  2 14:18:06 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Sun, 02 Feb 2014 14:18:06 +0100
Subject: [Scilab-users] clc() icon with additional functionality !!?
In-Reply-To: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
References: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
Message-ID: <52EE458E.2050106@free.fr>

Le 02/02/2014 10:05, A Khorshidi a ?crit :
>     <button icon="edit-clear" tooltiptext="Clear All">
>
>         <callback   instruction="    clc();
>                     clear();
>                     clearglobal();
>                     resethistory();
>                     chdir()"
>                     type="0"/>
>
>     </button>
>
> After restarting Scilab, the new clc icon must can do all the above 
> tasks but it cannot clear local and global variables!
> Actually, I think, the "instruction" attribute cannot perform some 
> scilab commands sush as : clear(), clearglobal(),..
> However there are many instructions which work fine: clc(), 
> resethistory(), chdir(),..
>
> So where is the problem?
My best guess would be that in the callback, you should drop the atomic 
bombs clear() (and may be clearglobal()
if the callback instruction has survived to the clear() that it 
performed) as /last/ instructions. clear() also clears the /gcbo/ variable:
So your proposal looks like a gcbo-callback  suicide. And it is somewhat 
preferable to kiss one's mother /before/ suiciding oneself than /after/.

AAaaa /clear all, close all/... Nice custom!
:-)

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From akhorshidi at live.com  Sun Feb  2 14:42:05 2014
From: akhorshidi at live.com (A Khorshidi)
Date: Sun, 2 Feb 2014 05:42:05 -0800 (PST)
Subject: [Scilab-users] export graphics to EMF
In-Reply-To: <DUB112-W2187BE37E7059C1AC0CA76A3A80@phx.gbl>
References: <DUB112-W2187BE37E7059C1AC0CA76A3A80@phx.gbl>
Message-ID: <1391348525659-4028496.post@n3.nabble.com>

Thanks to the following article, now I can convert graphics format to each
other in Scilab command line: 
http://how-to.wikia.com/wiki/How_to_convert_one_image_format_to_another_via_command_line

by using "convert" command included in ImageMagick: unix_s('pstoedit -f emf
plotex.eps plotex.emf')
or by using "pstoedit" command from PStoEdit: unix_s('pstoedit -f emf
plotex.eps plotex.emf')

However, to execute the last command, it's necessary to change the working
directory to PStoEdit installation directory.


But above all, I create a patch which can fix that given bug. 

HTH
Mehran
_



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From akhorshidi at live.com  Sun Feb  2 14:43:20 2014
From: akhorshidi at live.com (A Khorshidi)
Date: Sun, 2 Feb 2014 05:43:20 -0800 (PST)
Subject: [Scilab-users] clc() icon with additional functionality !!?
In-Reply-To: <52EE3F21.2000701@free.fr>
References: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
 <52EE3F21.2000701@free.fr>
Message-ID: <1391348600814-4028497.post@n3.nabble.com>

Samuel GOUGEON wrote
> [..]
> 
>> So I decided to change the usage of that icon on my Scilab so that the 
>> newer one can clear local and global variable as well as clearing 
>> console.
>>
> Are you coming from Matlab? Matlabers and former ones use very often 
> /clear all/, /close all/  at the beginning of their scripts.
> I do not know where this "hygienism" is coming from. clear  is much more 
> brutal in Scilab
> than in Matlab. I never used them in the head of my scripts for 16 
> years, and i have never had problems for that.
> Some students or colleagues knowing a bit or a lot Matlab and this habit 
> and coming to Scilab keeping the same
> have problems with that (but they do not know that this is the reason), 
> since then libraries (sometimes local, loaded
> from ATOMS, etc) are also cleared, etc, and then many things get harder 
> ;) Indeed, embedded Scilab libraries are
> automatically restored when first calling one of their functions, but it 
> is not the case for other external libraries.
> 
> So, definitively, i will keep the clear icon as is.
> [..]

Samuel, I agree with you, and I do not intend to force my changes on any
other user! ;) 
However, I wanna modify it only on my Scilab but there is a problem in
calling some Scilab function from that XML file. 




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From JDHeinzmann at gmail.com  Mon Feb  3 00:08:44 2014
From: JDHeinzmann at gmail.com (JD Heinzmann)
Date: Sun, 2 Feb 2014 15:08:44 -0800 (PST)
Subject: [Scilab-users] Trying to use old Scicos file with Xcos
Message-ID: <1391382524436-4028498.post@n3.nabble.com>

About 3 years ago I developed a Scicos simulation of a heat engine using
ScicosLab-4.4b8 with Scicos 4.4.  I have just downloaded Scilab 5.4.1 and
would like to run this old simulation under Xcos.  

I can open the old .cos file in Xcos and see the blocks and navigate into
the super-block hierarchy just fine.  I can save this block diagram as .xcos
and .zcos files just fine.  I can load the context file into Scilab and run
it to set up the workspace before running the simulation.  But when I try to
run the simulation under Xcos, Scilab and Xcos immediately quits silently
(with no error messages).  

Are Scicos files not compatible with Xcos?  If not, what do I need to do to
adjust my model to work with Xcos?

Thank you!

JD



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From Christophe.Dang at sidel.com  Mon Feb  3 09:17:53 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Mon, 3 Feb 2014 09:17:53 +0100
Subject: [Scilab-users] Intersection of wavy surfaces
In-Reply-To: <3B5FFC67498DFF49AE7271A584867D16F326346C56@301EX00100.sidel.com>
References: <3B5FFC67498DFF49AE7271A584867D16F3262F6C20@301EX00100.sidel.com>
 <52E95320.2090802@free.fr>
 <3B5FFC67498DFF49AE7271A584867D16F326346A0F@301EX00100.sidel.com>
 <3B5FFC67498DFF49AE7271A584867D16F326346C56@301EX00100.sidel.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3263E77D7@301EX00100.sidel.com>

Hello,

concerning the presumed "bug of SVG export" I mentioned,

finally there's no bug,

the export is just quite long because of the size of the file (5MB).

Maybe I could suggest some kind of progress bar.

Regards

--
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From Christophe.Dang at sidel.com  Mon Feb  3 09:31:54 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Mon, 3 Feb 2014 09:31:54 +0100
Subject: [Scilab-users] clear() or not clear()? [was: clc() icon with
 additional functionality !!?]
In-Reply-To: <52EE3F21.2000701@free.fr>
References: <DUB112-W1320349971CE33900B9F53DA3A80@phx.gbl>
 <52EE3F21.2000701@free.fr>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3263E7844@301EX00100.sidel.com>

 Hello,

> Matlabers and former ones use very often clear all, close all at the
> beginning of their scripts.
> I do not know where this "hygienism" is coming from.
> clear  is much more brutal in Scilab than in Matlab.
> I never used them in the head of my scripts for 16 years

Never been a Matlaber.

Personally, I use clear() during the development of my scripts:
I sometimes forget to initiallise some variables,
and if it gets the value from a past execution,
then it prevents me from seeing that the variable does not exist
in a given case.

After that, I don't to remove it in my final version...
Probably I should.

Maybe there's a beter way do spot such problems.

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From ian.h.bell at gmail.com  Mon Feb  3 23:39:46 2014
From: ian.h.bell at gmail.com (Ian Bell)
Date: Mon, 3 Feb 2014 23:39:46 +0100
Subject: [Scilab-users] Determine if 32-bit or 64-bit installation of scilab
	in code
Message-ID: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>

I need to determine in code if the active scilab version is 32-bit or
64-bit in order to load the right dynamically loaded library on windows.

How can I determine whether scilab is 32-bit or 64-bit?

Thanks,
Ian
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From sgougeon at free.fr  Tue Feb  4 00:49:37 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Tue, 04 Feb 2014 00:49:37 +0100
Subject: [Scilab-users] Determine if 32-bit or 64-bit installation of
 scilab in code
In-Reply-To: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>
References: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>
Message-ID: <52F02B11.2050303@free.fr>

Le 03/02/2014 23:39, Ian Bell a ?crit :
> I need to determine in code if the active scilab version is 32-bit or 
> 64-bit in order to load the right dynamically loaded library on windows.
>
> How can I determine whether scilab is 32-bit or 64-bit?
maybe with
[v, o] = getversion(),
o(2)=="x64"

Samuel


From ian.h.bell at gmail.com  Tue Feb  4 09:05:45 2014
From: ian.h.bell at gmail.com (Ian Bell)
Date: Tue, 4 Feb 2014 09:05:45 +0100
Subject: [Scilab-users] Determine if 32-bit or 64-bit installation of
 scilab in code
In-Reply-To: <52F02B11.2050303@free.fr>
References: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>
 <52F02B11.2050303@free.fr>
Message-ID: <CAJQnXJdGRquO29d0e_dWxiMzT0FLxBGkO1ph97s_fEWoh-xTGQ@mail.gmail.com>

Brilliant, works great.  Thanks.


On Tue, Feb 4, 2014 at 12:49 AM, Samuel Gougeon <sgougeon at free.fr> wrote:

> Le 03/02/2014 23:39, Ian Bell a ?crit :
>
>  I need to determine in code if the active scilab version is 32-bit or
>> 64-bit in order to load the right dynamically loaded library on windows.
>>
>> How can I determine whether scilab is 32-bit or 64-bit?
>>
> maybe with
> [v, o] = getversion(),
> o(2)=="x64"
>
> Samuel
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From ebmb.sci at gmail.com  Mon Feb  3 13:27:59 2014
From: ebmb.sci at gmail.com (E Bmb)
Date: Mon, 3 Feb 2014 10:27:59 -0200
Subject: [Scilab-users] Genectic algorithm question
Message-ID: <CAA1KOFoLhk+nsUiPg6p=_7Ho8EE1sDYgvS+JpkJiyA6Qzowm0Q@mail.gmail.com>

 Hello All,
 I've been used the Genetic Algorithm in Scilab 5.4.1 (with the optim_ga
macro). After a lot of tests, I would like to report a strange behaviour.
That is, from the second time that I ran the algorithm, I always note a
time increment to get the results. For example, to optimize a schedule
problem with 40 tasks, at the first time the results could be given in 5
minutes, but from the second time it will be much more than 5 min. (This
time is only a example, ok?!)

 I also noted that when I close the Scilab environment and start it again,
I can get my results, for example, in the same 5 minutes. (But, I always
will need close and start to get time and results (in terms of quality)
corrects.)

 So, my questions are:

1. What is happening with my Scilab?
2. Is that behaviour correct?
3. Somebody who works with optimization already had problems like this?

 Thanks in advance for attention!

 Best regards,
 Eduardo.
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From ebmb.sci at gmail.com  Mon Feb  3 13:33:29 2014
From: ebmb.sci at gmail.com (ebmb.sci)
Date: Mon, 3 Feb 2014 04:33:29 -0800 (PST)
Subject: [Scilab-users] Genetic Algorithm question
Message-ID: <1391430808990-4028501.post@n3.nabble.com>

 Hello All,
 I've been used the Genetic Algorithm in Scilab 5.4.1 (with the optim_ga
macro). After a lot of tests, I would like to report a strange behaviour.
That is, from the second time that I ran the algorithm, I always note a time
increment to get the results. For example, to optimize a schedule problem
with 40 tasks, at the first time the results could be given in 5 minutes,
but from the second time it will be much more than 5 min. (This time is only
a example, ok?!)

 I also noted that when I close the Scilab environment and start it again, I
can get my results, for example, in the same 5 minutes. (But, I always will
need close and start to get time and results (in terms of quality)
corrects.)

 So, my questions are:

1. What is happening with my Scilab?
2. Is that behaviour correct?
3. Somebody who works with optimization already had problems like this?

 Thanks in advance for attention!

 Best regards,
 Eduardo.



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From clement.david at scilab-enterprises.com  Tue Feb  4 10:43:13 2014
From: clement.david at scilab-enterprises.com (=?ISO-8859-1?Q?Cl=E9ment?= David)
Date: Tue, 04 Feb 2014 10:43:13 +0100
Subject: [Scilab-users] Trying to use old Scicos file with Xcos
In-Reply-To: <1391382524436-4028498.post@n3.nabble.com>
References: <1391382524436-4028498.post@n3.nabble.com>
Message-ID: <1391506993.5710.5.camel@paros>

Hello,

It should work fine but it is model related. Can you provide your
model ?

--
Cl?ment

Le dimanche 02 f?vrier 2014 ? 15:08 -0800, JD Heinzmann a ?crit :
> About 3 years ago I developed a Scicos simulation of a heat engine using
> ScicosLab-4.4b8 with Scicos 4.4.  I have just downloaded Scilab 5.4.1 and
> would like to run this old simulation under Xcos.  
> 
> I can open the old .cos file in Xcos and see the blocks and navigate into
> the super-block hierarchy just fine.  I can save this block diagram as .xcos
> and .zcos files just fine.  I can load the context file into Scilab and run
> it to set up the workspace before running the simulation.  But when I try to
> run the simulation under Xcos, Scilab and Xcos immediately quits silently
> (with no error messages).  
> 
> Are Scicos files not compatible with Xcos?  If not, what do I need to do to
> adjust my model to work with Xcos?
> 
> Thank you!
> 
> JD
> 
> 
> 
> --
> View this message in context: http://mailinglists.scilab.org/Trying-to-use-old-Scicos-file-with-Xcos-tp4028498.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users




From paul.bignier at scilab-enterprises.com  Tue Feb  4 11:39:39 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Tue, 04 Feb 2014 11:39:39 +0100
Subject: [Scilab-users] Determine if 32-bit or 64-bit installation of
 scilab in code
In-Reply-To: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>
References: <CAJQnXJc9daJ72cjA-qMML4SQjXhd_3WEFchXmtfeXH_YJCg5nQ@mail.gmail.com>
Message-ID: <52F0C36B.5020903@scilab-enterprises.com>

Hello,

[a b]=getversion();

b(2) should give you the answer :)

Regards,
Paul


On 02/03/2014 11:39 PM, Ian Bell wrote:
> I need to determine in code if the active scilab version is 32-bit or 
> 64-bit in order to load the right dynamically loaded library on windows.
>
> How can I determine whether scilab is 32-bit or 64-bit?
>
> Thanks,
> Ian
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Scilab Engineer & Xcos Developer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From paul.bignier at scilab-enterprises.com  Tue Feb  4 12:02:57 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Tue, 04 Feb 2014 12:02:57 +0100
Subject: [Scilab-users] Genectic algorithm question
In-Reply-To: <CAA1KOFoLhk+nsUiPg6p=_7Ho8EE1sDYgvS+JpkJiyA6Qzowm0Q@mail.gmail.com>
References: <CAA1KOFoLhk+nsUiPg6p=_7Ho8EE1sDYgvS+JpkJiyA6Qzowm0Q@mail.gmail.com>
Message-ID: <52F0C8E1.8010903@scilab-enterprises.com>

Hi Eduardo,

What version of Scilab are you running, and under which OS please?

Could you please provide a test case so we can reproduce the bug?

As far as I know, this behavior is abnormal.

Don't hesitate to report it on our bugzilla <http://bugzilla.scilab.org/>.

Regards,
Paul



On 02/03/2014 01:27 PM, E Bmb wrote:
>  Hello All,
>  I've been used the Genetic Algorithm in Scilab 5.4.1 (with the 
> optim_ga macro). After a lot of tests, I would like to report a 
> strange behaviour. That is, from the second time that I ran the 
> algorithm, I always note a time increment to get the results. For 
> example, to optimize a schedule problem with 40 tasks, at the first 
> time the results could be given in 5 minutes, but from the second time 
> it will be much more than 5 min. (This time is only a example, ok?!)
>
>  I also noted that when I close the Scilab environment and start it 
> again, I can get my results, for example, in the same 5 minutes. (But, 
> I always will need close and start to get time and results (in terms 
> of quality) corrects.)
>
>  So, my questions are:
>
> 1. What is happening with my Scilab?
> 2. Is that behaviour correct?
> 3. Somebody who works with optimization already had problems like this?
>
>  Thanks in advance for attention!
>
>  Best regards,
>  Eduardo.
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Scilab Engineer & Xcos Developer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From contact at pierre-vuillemin.fr  Wed Feb  5 09:56:01 2014
From: contact at pierre-vuillemin.fr (Pierre Vuillemin)
Date: Wed, 05 Feb 2014 09:56:01 +0100
Subject: [Scilab-users] Interfacing fortran code with scilab
Message-ID: <1391590561.4264.4.camel@Pelisse.lan>

Hello all,

I am currently learning fortran in order to speed up some part o my code
and I would like to interface it with Scilab.

To make some tests, I have used this fortran code :

subroutine matmul(C,A,B,m,n,p)
    integer ::m,n,p,i,j,k
    real(kind=8),dimension(m,n),intent(in)::A
    real(kind=8),dimension(n,p),intent(in)::B
    real(kind=8),dimension(m,p),intent(out)::C
    real(kind=8):: temp
    C = 0
    do j =1,p
      do k=1,n
        temp = B(k,j)
        do i=1,m
            C(i,j)=C(i,j) + A(i,k)*temp
        end do
      end do
    end do        
end subroutine matmul

which performs a matrix multiplication. Then I have used 'ilib_for_link'
to create the link.
It works but I have some questions : 

- I did the same thing in Python with f2py and the code is seemingly
faster in python, I was wondering why ? (the precision is the same)

- If I change the 'kind = 8' to 'kind = 4' in the fortran code, the
function returns a result which completely wrong.
I expected it to be wrong, but not that much : for instance, with A = 10
and B = 20, the call to the fortran function gives me '6.36D-314'  
What is the reason? (My comprehension of how fortran types work with the
kind parameter is still limited, I know that kind=8 and kind=4 is not a
very portable expression though)

- If I replace
    real(kind=8),dimension(m,p),intent(out)::C
by
    real(kind=8),dimension(:,:),intent(out)::C
I get a segfault in Scilab or it just closes. I was wondering why ? (I
thought it was something valid since gfortran still compiles)

- Is it possible to keep the upper case in the name of fortran functions
when linked to scilab ? (At the beginning, my function was called
'matMul' and it took me some time to figure out what the error message
'matMul is not an entry point' meant)

Best regards,

Pierre Vuillemin



From paul.carrico at esterline.com  Wed Feb  5 13:38:40 2014
From: paul.carrico at esterline.com (Carrico, Paul)
Date: Wed, 5 Feb 2014 12:38:40 +0000
Subject: [Scilab-users] Interfacing fortran code with scilab
In-Reply-To: <1391590561.4264.4.camel@Pelisse.lan>
References: <1391590561.4264.4.camel@Pelisse.lan>
Message-ID: <3A6B7233274DB449A2A0053A47684F95042502FC@BGS-EX01.auxitrol.ad>

All

 before using fortan code, did you have a look to the "vectorization" in order to avoid loops (that drastically decrease speed)  and to increase speedup consequently ?

Just an advice

Paul

-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de Pierre Vuillemin
Envoy??: mercredi 5 f?vrier 2014 09:56
??: users at lists.scilab.org
Objet?: [Scilab-users] Interfacing fortran code with scilab

Hello all,

I am currently learning fortran in order to speed up some part o my code and I would like to interface it with Scilab.

To make some tests, I have used this fortran code :

subroutine matmul(C,A,B,m,n,p)
    integer ::m,n,p,i,j,k
    real(kind=8),dimension(m,n),intent(in)::A
    real(kind=8),dimension(n,p),intent(in)::B
    real(kind=8),dimension(m,p),intent(out)::C
    real(kind=8):: temp
    C = 0
    do j =1,p
      do k=1,n
        temp = B(k,j)
        do i=1,m
            C(i,j)=C(i,j) + A(i,k)*temp
        end do
      end do
    end do        
end subroutine matmul

which performs a matrix multiplication. Then I have used 'ilib_for_link'
to create the link.
It works but I have some questions : 

- I did the same thing in Python with f2py and the code is seemingly faster in python, I was wondering why ? (the precision is the same)

- If I change the 'kind = 8' to 'kind = 4' in the fortran code, the function returns a result which completely wrong.
I expected it to be wrong, but not that much : for instance, with A = 10 and B = 20, the call to the fortran function gives me '6.36D-314'  
What is the reason? (My comprehension of how fortran types work with the kind parameter is still limited, I know that kind=8 and kind=4 is not a very portable expression though)

- If I replace
    real(kind=8),dimension(m,p),intent(out)::C
by
    real(kind=8),dimension(:,:),intent(out)::C
I get a segfault in Scilab or it just closes. I was wondering why ? (I thought it was something valid since gfortran still compiles)

- Is it possible to keep the upper case in the name of fortran functions when linked to scilab ? (At the beginning, my function was called 'matMul' and it took me some time to figure out what the error message 'matMul is not an entry point' meant)

Best regards,

Pierre Vuillemin

_______________________________________________
users mailing list
users at lists.scilab.org
https://urldefense.proofpoint.com/v1/url?u=http://lists.scilab.org/mailman/listinfo/users&k=b2vlTQszY8VIpYRvaG%2By2A%3D%3D%0A&r=SzPQe21KEY%2BPdUhJge5w%2FdtbtLgIXw5YTsnbzx%2F7JYE%3D%0A&m=ULVia0lWcxnisV%2BYAJ894mfD5PBI7UEZDeqeSqE9PQw%3D%0A&s=4501ea13ac011e234cb1dd1cdf1810c4388736b832cf43301a84c41f80b767f5
--------------------------------------------------------------------------------


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This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please contact the sender and delete the email from your system. If you are not the named addressee you should not disseminate, distribute or copy this email.



From contact at pierre-vuillemin.fr  Wed Feb  5 14:08:27 2014
From: contact at pierre-vuillemin.fr (Pierre Vuillemin)
Date: Wed, 05 Feb 2014 14:08:27 +0100
Subject: [Scilab-users] Interfacing fortran code with scilab
In-Reply-To: <3A6B7233274DB449A2A0053A47684F95042502FC@BGS-EX01.auxitrol.ad>
References: <1391590561.4264.4.camel@Pelisse.lan>
 <3A6B7233274DB449A2A0053A47684F95042502FC@BGS-EX01.auxitrol.ad>
Message-ID: <1391605707.4264.25.camel@Pelisse.lan>

I am quite used to work with Matlab, hence my code is fully vectorized,
however :
- some parts of my code cannot be vectorized (optimization loops, etc)
- some other parts are really not natural when written in a vectorized
way. Thus writting, reading, debugging and maintaining them is a pain.

But basically, I just would like to see the speed gain I can achieve
with a lower level language on some parts of my code.
Then depending on the performances of the forthcoming JIT compiler of
Scilab, I may consider to translate (or not) my code in fortran.

Pierre Vuillemin

Le mercredi 05 f?vrier 2014 ? 12:38 +0000, Carrico, Paul a ?crit :
> All
> 
>  before using fortan code, did you have a look to the "vectorization" in order to avoid loops (that drastically decrease speed)  and to increase speedup consequently ?
> 
> Just an advice
> 
> Paul
> 
> -----Message d'origine-----
> De : users [mailto:users-bounces at lists.scilab.org] De la part de Pierre Vuillemin
> Envoy? : mercredi 5 f?vrier 2014 09:56
> ? : users at lists.scilab.org
> Objet : [Scilab-users] Interfacing fortran code with scilab
> 
> Hello all,
> 
> I am currently learning fortran in order to speed up some part o my code and I would like to interface it with Scilab.
> 
> To make some tests, I have used this fortran code :
> 
> subroutine matmul(C,A,B,m,n,p)
>     integer ::m,n,p,i,j,k
>     real(kind=8),dimension(m,n),intent(in)::A
>     real(kind=8),dimension(n,p),intent(in)::B
>     real(kind=8),dimension(m,p),intent(out)::C
>     real(kind=8):: temp
>     C = 0
>     do j =1,p
>       do k=1,n
>         temp = B(k,j)
>         do i=1,m
>             C(i,j)=C(i,j) + A(i,k)*temp
>         end do
>       end do
>     end do        
> end subroutine matmul
> 
> which performs a matrix multiplication. Then I have used 'ilib_for_link'
> to create the link.
> It works but I have some questions : 
> 
> - I did the same thing in Python with f2py and the code is seemingly faster in python, I was wondering why ? (the precision is the same)
> 
> - If I change the 'kind = 8' to 'kind = 4' in the fortran code, the function returns a result which completely wrong.
> I expected it to be wrong, but not that much : for instance, with A = 10 and B = 20, the call to the fortran function gives me '6.36D-314'  
> What is the reason? (My comprehension of how fortran types work with the kind parameter is still limited, I know that kind=8 and kind=4 is not a very portable expression though)
> 
> - If I replace
>     real(kind=8),dimension(m,p),intent(out)::C
> by
>     real(kind=8),dimension(:,:),intent(out)::C
> I get a segfault in Scilab or it just closes. I was wondering why ? (I thought it was something valid since gfortran still compiles)
> 
> - Is it possible to keep the upper case in the name of fortran functions when linked to scilab ? (At the beginning, my function was called 'matMul' and it took me some time to figure out what the error message 'matMul is not an entry point' meant)
> 
> Best regards,
> 
> Pierre Vuillemin
> 
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> https://urldefense.proofpoint.com/v1/url?u=http://lists.scilab.org/mailman/listinfo/users&k=b2vlTQszY8VIpYRvaG%2By2A%3D%3D%0A&r=SzPQe21KEY%2BPdUhJge5w%2FdtbtLgIXw5YTsnbzx%2F7JYE%3D%0A&m=ULVia0lWcxnisV%2BYAJ894mfD5PBI7UEZDeqeSqE9PQw%3D%0A&s=4501ea13ac011e234cb1dd1cdf1810c4388736b832cf43301a84c41f80b767f5
> --------------------------------------------------------------------------------
> 
> 
> Le pr?sent mail et ses pi?ces jointes sont confidentiels et destin?s ? la personne ou aux personnes vis?e(s) ci-dessus. Si vous avez re?u cet e-mail par erreur, veuillez contacter imm?diatement l'exp?diteur et effacer le message de votre syst?me. Toute divulgation, copie ou distribution de cet e-mail est strictement interdite.
> 
> This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please contact the sender and delete the email from your system. If you are not the named addressee you should not disseminate, distribute or copy this email.
> 




From jdheinzmann at gmail.com  Wed Feb  5 17:52:55 2014
From: jdheinzmann at gmail.com (John David Heinzmann)
Date: Wed, 5 Feb 2014 11:52:55 -0500
Subject: [Scilab-users] Trying to use old Scicos file with Xcos
In-Reply-To: <1391506993.5710.5.camel@paros>
References: <1391382524436-4028498.post@n3.nabble.com>
 <1391506993.5710.5.camel@paros>
Message-ID: <CAP6=J4kqYKDjRJjdBuX4ni5d8UGjL4d_PEtSMefvFN1uVz0U0g@mail.gmail.com>

Hi, Cl?ment,

I am new here, so would you tell me the best way to provide my model?
 Simply as an email attachment?  .zcos format to save space?

Thanks.

JD


On Tue, Feb 4, 2014 at 4:43 AM, Cl?ment David <
clement.david at scilab-enterprises.com> wrote:

> Hello,
>
> It should work fine but it is model related. Can you provide your
> model ?
>
> --
> Cl?ment
>
> Le dimanche 02 f?vrier 2014 ? 15:08 -0800, JD Heinzmann a ?crit :
> > About 3 years ago I developed a Scicos simulation of a heat engine using
> > ScicosLab-4.4b8 with Scicos 4.4.  I have just downloaded Scilab 5.4.1 and
> > would like to run this old simulation under Xcos.
> >
> > I can open the old .cos file in Xcos and see the blocks and navigate into
> > the super-block hierarchy just fine.  I can save this block diagram as
> .xcos
> > and .zcos files just fine.  I can load the context file into Scilab and
> run
> > it to set up the workspace before running the simulation.  But when I
> try to
> > run the simulation under Xcos, Scilab and Xcos immediately quits silently
> > (with no error messages).
> >
> > Are Scicos files not compatible with Xcos?  If not, what do I need to do
> to
> > adjust my model to work with Xcos?
> >
> > Thank you!
> >
> > JD
> >
> >
> >
> > --
> > View this message in context:
> http://mailinglists.scilab.org/Trying-to-use-old-Scicos-file-with-Xcos-tp4028498.html
> > Sent from the Scilab users - Mailing Lists Archives mailing list archive
> at Nabble.com.
> > _______________________________________________
> > users mailing list
> > users at lists.scilab.org
> > http://lists.scilab.org/mailman/listinfo/users
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From kvinith7 at gmail.com  Wed Feb  5 09:23:30 2014
From: kvinith7 at gmail.com (Vinith Kumar)
Date: Wed, 5 Feb 2014 13:53:30 +0530
Subject: [Scilab-users] regarding the need of help manual
Message-ID: <CA+CWP1=oa4UAQofUu6rX9nEmKsqUkruLSg9wK-fEs6WonTKBRQ@mail.gmail.com>

Iam doing my final year under graduate project in interfacing Arduino
with scilab
The help manual is available in French language. I want the soft copy
of help    manual for interfacing scilab with Arduino in English
language. So that i and my   project mates  can understand the Arduino
Atom interfacing with scilab and it will be useful  for my project
also.

with regards,

[1]. J.HARIHARASUDHAN
[2]. K.DINESH KUMAR
[3]. B.VINITH KUMAR
Department of Electronics and Communication Engineering,
Institute of Road and Transport Technology,
Erode
Tamilnadu
India
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From ebmb.sci at gmail.com  Wed Feb  5 11:24:41 2014
From: ebmb.sci at gmail.com (ebmb.sci)
Date: Wed, 5 Feb 2014 02:24:41 -0800 (PST)
Subject: [Scilab-users] Genectic algorithm question
In-Reply-To: <52F0C8E1.8010903@scilab-enterprises.com>
References: <CAA1KOFoLhk+nsUiPg6p=_7Ho8EE1sDYgvS+JpkJiyA6Qzowm0Q@mail.gmail.com>
 <52F0C8E1.8010903@scilab-enterprises.com>
Message-ID: <1391595881063-4028511.post@n3.nabble.com>

 Dear Paul,
 first of all, thanks for your answer...

 The version of my Scilab is 5.4.1 1364571296, under MS Windows 8 6.2
64bits.

 I will contact you by email to send a test case, ok?!

 Thanks a lot for your attention!

 Cheers,
 Eduardo.



--
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From Christophe.Dang at sidel.com  Thu Feb  6 08:57:59 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Thu, 6 Feb 2014 08:57:59 +0100
Subject: [Scilab-users] regarding the need of help manual
In-Reply-To: <CA+CWP1=oa4UAQofUu6rX9nEmKsqUkruLSg9wK-fEs6WonTKBRQ@mail.gmail.com>
References: <CA+CWP1=oa4UAQofUu6rX9nEmKsqUkruLSg9wK-fEs6WonTKBRQ@mail.gmail.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3264C90AF@301EX00100.sidel.com>

Hello, 

> De la part de Vinith Kumar
> Envoy? : mercredi 5 f?vrier 2014 09:24
>
> I want the soft copy of help    
> manual for interfacing scilab with Arduino in English language. 

What do you mean by "soft copy"? A PDF?

You normally have the help in english provided with the software.

You can start the help navigator just by typing help() in the console,
or using the dedicated button (?).

The help is available at http://help.scilab.org/

you also have a wiki in english at http://wiki.scilab.org/

Finally, you probably have the help files intalled on your computer.
In my case (Windows XP), you have the .chm files at
~/modules/helptools where ~ is the installation folder.

Hope this helps.

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From ddu at bluewin.ch  Thu Feb  6 09:58:18 2014
From: ddu at bluewin.ch (Skydive)
Date: Thu, 6 Feb 2014 00:58:18 -0800 (PST)
Subject: [Scilab-users]  uicontrol not printed out in xs2pdf (and all)
Message-ID: <1391677098235-4028520.post@n3.nabble.com>

Hello

I have some issues with the uicontrol. When i want to export a figure with
axes and uicontrol's i get only the axes out of it.

here an example:

///-------------------------------------------
clc
clear
close(gcf())

f=gcf();
plot2d();
t1=uicontrol(f,'style',"text", 'string', "hello", 'position', [10 100 100
50]);
filename='test';
xs2pdf(f, filename)

///-------------------------------------------

I'm using scilab5.4.1 on an xp 32bit machine

I found nowhere some answer...

Thanks for your help in advance

greets domi



--
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From boljeleel at yahoo.com  Thu Feb  6 12:41:06 2014
From: boljeleel at yahoo.com (Debola Abduljeleel)
Date: Thu, 6 Feb 2014 03:41:06 -0800 (PST)
Subject: [Scilab-users] Help on how to plot double y-axes on thesame x-axis
	using Scilab!
Message-ID: <1391686866.34021.YahooMailNeo@web160304.mail.bf1.yahoo.com>


Hi everyone,

Please how can I plot a graph with 2 y-axes i.e. Left & right with just one single x-axis.

Regards.
?
ABDULJELEEL A. OSUNKUNLE
SCIENTIFIC OFFICER
PROJECTS DEVELOPMENT INSTITUTE, P.M.B. 01609, EMENE INDUSTRIAL LAYOUT, ENUGU, NIGERIA.
+2347058408440.
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From Christophe.Dang at sidel.com  Thu Feb  6 13:05:25 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Thu, 6 Feb 2014 13:05:25 +0100
Subject: [Scilab-users] Help on how to plot double y-axes on thesame
 x-axis	using Scilab!
In-Reply-To: <1391686866.34021.YahooMailNeo@web160304.mail.bf1.yahoo.com>
References: <1391686866.34021.YahooMailNeo@web160304.mail.bf1.yahoo.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3264C9765@301EX00100.sidel.com>

Hello, 

> De la part de Debola Abduljeleel
> Envoy? : jeudi 6 f?vrier 2014 12:41
>
> Please how can I plot a graph with 2 y-axes i.e. Left & right with
> just one single x-axis.

We already answered you in last september, please see

http://mailinglists.scilab.org/Scilab-users-Double-y-axis-on-a-single-plot-td4027480.html

I personally invited you to have a look at
https://commons.wikimedia.org/wiki/File:Trace_ln_sqrt_1_2_deux_echelles_scilab.svg?uselang=en

Best regards

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From mariajovera at icloud.com  Fri Feb  7 23:39:33 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Fri, 7 Feb 2014 14:39:33 -0800 (PST)
Subject: [Scilab-users] Loading multiple text files
Message-ID: <1391812772237-4028528.post@n3.nabble.com>

Hello, I'm newbie in scilab... 

I have one folder 
/Users/konstantina/Desktop/CHECK/export_5-20/export_5-20HZ_C*.txt

where *  takes the values= 1:1:5

I need open each text file and make a plot. So, I was thinking in something
like  

for i=1:1:4//  
DM(i)=fscanfMat('export_5-20HZ_C(i).txt')
    figure(i)
    plot(DM(i)(:,7),DM(i)(:,4),'ro*',DM(i)(:,7),DM(i)(:,5),'o')    
end

but is obvious that it doesn't work, hehehe.
Please, please any suggestions!!! Ill be very thankful

:)

Best wishes!!!




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From sgougeon at free.fr  Sat Feb  8 01:29:06 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Sat, 08 Feb 2014 01:29:06 +0100
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <1391812772237-4028528.post@n3.nabble.com>
References: <1391812772237-4028528.post@n3.nabble.com>
Message-ID: <52F57A52.3040701@free.fr>

Le 07/02/2014 23:39, samaelkreutz a ?crit :
> for i=1:1:4//
>      DM(i)=fscanfMat('export_5-20HZ_C(i).txt')
>      figure(i)
>      plot(DM(i)(:,7),DM(i)(:,4),'ro*',DM(i)(:,7),DM(i)(:,5),'o')
> end
  for i=1:1:4//
      DM=fscanfMat('export_5-20HZ_C(i).txt')
      figure(i)
      plot(DM(:,7),DM(:,4),'ro*',DM(:,7),DM(:,5),'o')
  end

may work


From mariajovera at icloud.com  Sat Feb  8 02:21:40 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Fri, 7 Feb 2014 17:21:40 -0800 (PST)
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <52F57A52.3040701@free.fr>
References: <1391812772237-4028528.post@n3.nabble.com>
 <52F57A52.3040701@free.fr>
Message-ID: <1391822500814-4028534.post@n3.nabble.com>

:(  nop, it doesn't work

<http://mailinglists.scilab.org/file/n4028534/Captura_de_pantalla_2014-02-07_a_la%28s%29_22.18.25.png> 

seems the program doesn't recognize the variable (i)

<http://mailinglists.scilab.org/file/n4028534/Captura_de_pantalla_2014-02-07_a_la%28s%29_22.20.52.png> 



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From paul.carrico at free.fr  Sat Feb  8 08:52:36 2014
From: paul.carrico at free.fr (Paul CARRICO)
Date: Sat, 8 Feb 2014 08:52:36 +0100
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <1391812772237-4028528.post@n3.nabble.com>
References: <1391812772237-4028528.post@n3.nabble.com>
Message-ID: <003001cf24a2$bc578d30$3506a790$@carrico@free.fr>

I haven't tested specifically your example, but I would use something like :

for i=1:1:4
str1 = "...
DM("+ string(i) +")=fscanfMat(''export_5-20HZ_C("+ string(i) +").txt''),...
    figure("+ string(i) +"),...
    plot(DM("+ string(i) +")(:,7),DM("+ string(i) +")(:,4),''ro*'',DM("+
string(i) +")(:,7),DM("+ string(i) +")(:,5),''o''),...    
       ";
execstr(str1) ;
end


Paul

-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de
samaelkreutz
Envoy??: vendredi 7 f?vrier 2014 23:40
??: users at lists.scilab.org
Objet?: [Scilab-users] Loading multiple text files

Hello, I'm newbie in scilab... 

I have one folder
/Users/konstantina/Desktop/CHECK/export_5-20/export_5-20HZ_C*.txt

where *  takes the values= 1:1:5

I need open each text file and make a plot. So, I was thinking in something
like  

for i=1:1:4//
DM(i)=fscanfMat('export_5-20HZ_C(i).txt')
    figure(i)
    plot(DM(i)(:,7),DM(i)(:,4),'ro*',DM(i)(:,7),DM(i)(:,5),'o')    
end

but is obvious that it doesn't work, hehehe.
Please, please any suggestions!!! Ill be very thankful

:)

Best wishes!!!




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From paul.carrico at free.fr  Sat Feb  8 09:06:23 2014
From: paul.carrico at free.fr (Paul CARRICO)
Date: Sat, 8 Feb 2014 09:06:23 +0100
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <003001cf24a2$bc578d30$3506a790$@carrico@free.fr>
References: <1391812772237-4028528.post@n3.nabble.com>
 <003001cf24a2$bc578d30$3506a790$@carrico@free.fr>
Message-ID: <003401cf24a4$a8edffc0$fac9ff40$@carrico@free.fr>

Note the "plot" line has been cut in 2 ones by outlook !!!!

-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de Paul
CARRICO
Envoy??: samedi 8 f?vrier 2014 08:53
??: 'International users mailing list for Scilab.'
Objet?: Re: [Scilab-users] Loading multiple text files

I haven't tested specifically your example, but I would use something like :

for i=1:1:4
str1 = "...
DM("+ string(i) +")=fscanfMat(''export_5-20HZ_C("+ string(i) +").txt''),...
    figure("+ string(i) +"),...
    plot(DM("+ string(i) +")(:,7),DM("+ string(i) +")(:,4),''ro*'',DM("+
string(i) +")(:,7),DM("+ string(i) +")(:,5),''o''),...    
       ";
execstr(str1) ;
end


Paul

-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de
samaelkreutz Envoy??: vendredi 7 f?vrier 2014 23:40 ??:
users at lists.scilab.org Objet?: [Scilab-users] Loading multiple text files

Hello, I'm newbie in scilab... 

I have one folder
/Users/konstantina/Desktop/CHECK/export_5-20/export_5-20HZ_C*.txt

where *  takes the values= 1:1:5

I need open each text file and make a plot. So, I was thinking in something
like  

for i=1:1:4//
DM(i)=fscanfMat('export_5-20HZ_C(i).txt')
    figure(i)
    plot(DM(i)(:,7),DM(i)(:,4),'ro*',DM(i)(:,7),DM(i)(:,5),'o')    
end

but is obvious that it doesn't work, hehehe.
Please, please any suggestions!!! Ill be very thankful

:)

Best wishes!!!




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From sgougeon at free.fr  Sat Feb  8 13:14:12 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Sat, 08 Feb 2014 13:14:12 +0100
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <1391822500814-4028534.post@n3.nabble.com>
References: <1391812772237-4028528.post@n3.nabble.com>
 <52F57A52.3040701@free.fr> <1391822500814-4028534.post@n3.nabble.com>
Message-ID: <52F61F94.5020101@free.fr>

Le 08/02/2014 02:21, samaelkreutz a ?crit :
> :(  nop, it doesn't work
>
> <http://mailinglists.scilab.org/file/n4028534/Captura_de_pantalla_2014-02-07_a_la%28s%29_22.18.25.png>
Yes, i did not pay attention to the management of files names in your 
script.
How are numbered the names of  your files?
Assuming that they are: export_5-20HZ_C1.txt, export_5-20HZ_C2.txt, etc, 
then

  for i=1:1:4//
      DM = fscanfMat(msprintf("export_5-20HZ_C%d.txt",i));
      figure(i);
      plot(DM(:,7), DM(:,4), 'ro*', DM(:,7), DM(:,5), 'o')
  end

should work, provided that files are set in the working directory (run 
/pwd, dir/ to see it and them)
and are well formatted to be accepted by fscanfMat().

Samuel

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From mariajovera at icloud.com  Sat Feb  8 16:23:10 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Sat, 8 Feb 2014 07:23:10 -0800 (PST)
Subject: [Scilab-users] Loading multiple text files
In-Reply-To: <52F61F94.5020101@free.fr>
References: <1391812772237-4028528.post@n3.nabble.com>
 <52F57A52.3040701@free.fr> <1391822500814-4028534.post@n3.nabble.com>
 <52F61F94.5020101@free.fr>
Message-ID: <1391872990998-4028546.post@n3.nabble.com>

*THANKS ALOT!!! NOW ITWORKS 
:) :) *



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From limipl2 at orange.fr  Fri Feb  7 10:01:11 2014
From: limipl2 at orange.fr (limipl)
Date: Fri, 7 Feb 2014 01:01:11 -0800 (PST)
Subject: [Scilab-users] graph format
Message-ID: <1391763671323-4028525.post@n3.nabble.com>

Hi,
I save graphs from scilab on my desktop but the file has no extension and
i'm now unable to open it.
Is there a solution ?

Thanks



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From noelec57 at yahoo.fr  Sun Feb  9 16:14:09 2014
From: noelec57 at yahoo.fr (noelec57)
Date: Sun, 9 Feb 2014 07:14:09 -0800 (PST)
Subject: [Scilab-users] Scilab vs Xcos
Message-ID: <1391958848959-4028555.post@n3.nabble.com>

Bonjour

Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. Pour le
moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis
continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon syst?me en
utilisant Xcos (mode graphique) et scilab (ligne de code). Malheureusement
le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas
exactement la m?me r?ponse. Par exemple, j'ai cherch? le point d'instabilit?
avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes de gain
critique. Idem, l'application d'un PID avec les m?mes valeurs ne fournit pas
la m?e r?ponse( variation d'environ 10% !!). 

Je ne parviens pas ? trouver la raison de cette diff?rence. 

A titre d'exemple, avec la fonction de transfert en BO suivante :  60 /
(1+8*s) * (1+2*s) * (1+s)  

le syst?me en BF ? retour unitaire  provoque des oscillations stables dans
un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos.

Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois
prendre et surtout pourquoi cet ?cart ?

Merci.



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From akhorshidi at live.com  Mon Feb 10 17:00:05 2014
From: akhorshidi at live.com (A Khorshidi)
Date: Mon, 10 Feb 2014 19:30:05 +0330
Subject: [Scilab-users] Modeling a damped driven pendulum by using Coselica
	blocks
Message-ID: <DUB112-W2034C1BE46201F87AF1406A3900@phx.gbl>


Hi; 

Is it possible to model a damped-nonlinear pendulum under external excitation by using Coselica blocks? 


Suppose we have a simple pendulum with a bob of mass "m" and a weightless rod of length "L". 
The following 2nd-order ODE describes the motion of the pendulum: 

"$ \ddot\theta + \frac{c}{mL^{2}}\dot{\theta}(t) + \frac{g}{L} \sin {\theta(t)} = \frac{\tau (t)}{mL^{2}} 
 $"

g: the gravitational acceleration (9.81 m/s^2)
ct: the (rotational) damping constant (due to air resistance and friction of the rod at its pivot point)
tau(t): the external torque applied to the pendulum

The attached files show how we can use Scilab ode function and Xcos blocks to solve the pendulum's ODE. 
So my question is, 
How can I solve this problem by using Modelica "standard"blocks? 
I'm debating whether or not I should write my own Modelica blocks. 


Merci, 
Mehran
_


 		 	   		  
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From Christophe.Dang at sidel.com  Tue Feb 11 09:20:30 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Tue, 11 Feb 2014 09:20:30 +0100
Subject: [Scilab-users] graph format
In-Reply-To: <1391763671323-4028525.post@n3.nabble.com>
References: <1391763671323-4028525.post@n3.nabble.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3265AD6BA@301EX00100.sidel.com>

Hello, 

> De la part de limipl
> Envoy? : vendredi 7 f?vrier 2014 10:01
>
> I save graphs from scilab on my desktop but the file has no extension
> and i'm now unable to open it.
> Is there a solution ?

Mosts OS use the extension to determine the type of file.

Maybe you could just add the correct extension.

Now the question is: how do you save your graph?

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From limipl2 at orange.fr  Tue Feb 11 16:30:49 2014
From: limipl2 at orange.fr (limipl)
Date: Tue, 11 Feb 2014 07:30:49 -0800 (PST)
Subject: [Scilab-users] graph format
In-Reply-To: <3B5FFC67498DFF49AE7271A584867D16F3265AD6BA@301EX00100.sidel.com>
References: <1391763671323-4028525.post@n3.nabble.com>
 <3B5FFC67498DFF49AE7271A584867D16F3265AD6BA@301EX00100.sidel.com>
Message-ID: <1392132649563-4028580.post@n3.nabble.com>

Hi,
That was the question... but I've successfully open the file with xload
command.
Thanks Dang



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From Christophe.Dang at sidel.com  Wed Feb 12 11:05:46 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Wed, 12 Feb 2014 11:05:46 +0100
Subject: [Scilab-users] graph format
In-Reply-To: <1392132649563-4028580.post@n3.nabble.com>
References: <1391763671323-4028525.post@n3.nabble.com>
 <3B5FFC67498DFF49AE7271A584867D16F3265AD6BA@301EX00100.sidel.com>
 <1392132649563-4028580.post@n3.nabble.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3265FACE4@301EX00100.sidel.com>

Hello, 

> De la part de limipl
> Envoy? : mardi 11 f?vrier 2014 16:31
>
> but I've successfully open the file with xload command.

OK, so you probably saved the graphics with the xsave() command.

Unfortunately, the format is not described in the help pages.
Probably a specific format.

If you want to process your graphics with another application,
you should use cammands like xs2png() (raster) or xs2svg() (vector graphics).

see e.g. http://help.scilab.org/docs/5.4.1/en_US/xs2svg.html

Hope this helps.

Regards

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

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From julian.estevez at ehu.es  Wed Feb 12 12:49:56 2014
From: julian.estevez at ehu.es (Jeibros)
Date: Wed, 12 Feb 2014 03:49:56 -0800 (PST)
Subject: [Scilab-users] 3d curve plot
Message-ID: <1392205796285-4028615.post@n3.nabble.com>

Hi all,

I'm totally new to Scilab (I used to work with Matlab), and I have a rather
simple question. I have two arrays (x,y). Next, I make a conversion so that
to get a new variable u out of x and y. And finally, I have a z,u
relationship.

*I would like to make a x,y,z plot*, and I don't need a surface, but a line.
Which is the solution please?

imagine that the code I have is this:

x=0:0.1:2;
y=0:0.2:4;
u=x+y;
z=3*u + 8;
plot3(x,y,z) //this is obviously wrong

Thanks a lot and sorry for the simple doubt




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From Serge.Steer at inria.fr  Thu Feb 13 10:51:25 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Thu, 13 Feb 2014 10:51:25 +0100
Subject: [Scilab-users] 3d curve plot
In-Reply-To: <1392205796285-4028615.post@n3.nabble.com>
References: <1392205796285-4028615.post@n3.nabble.com>
Message-ID: <52FC959D.60309@inria.fr>

Le 12/02/2014 12:49, Jeibros a ?crit :
> Hi all,
>
> I'm totally new to Scilab (I used to work with Matlab), and I have a rather
> simple question. I have two arrays (x,y). Next, I make a conversion so that
> to get a new variable u out of x and y. And finally, I have a z,u
> relationship.
>
> *I would like to make a x,y,z plot*, and I don't need a surface, but a line.
> Which is the solution please?
>
> imagine that the code I have is this:
>
> x=0:0.1:2;
> y=0:0.2:4;
> u=x+y;
> z=3*u + 8;
> plot3(x,y,z) //this is obviously wrong
Why?
>
> Thanks a lot and sorry for the simple doubt
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/3d-curve-plot-tp4028615.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>



From stephane.mottelet at utc.fr  Thu Feb 13 10:56:49 2014
From: stephane.mottelet at utc.fr (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Thu, 13 Feb 2014 10:56:49 +0100
Subject: [Scilab-users] 3d curve plot
In-Reply-To: <52FC959D.60309@inria.fr>
References: <1392205796285-4028615.post@n3.nabble.com>
 <52FC959D.60309@inria.fr>
Message-ID: <52FC96E1.6010105@utc.fr>

Le 13/02/2014 10:51, Serge Steer a ?crit :
> Le 12/02/2014 12:49, Jeibros a ?crit :
>> Hi all,
>>
>> I'm totally new to Scilab (I used to work with Matlab), and I have a 
>> rather
>> simple question. I have two arrays (x,y). Next, I make a conversion 
>> so that
>> to get a new variable u out of x and y. And finally, I have a z,u
>> relationship.
>>
>> *I would like to make a x,y,z plot*, and I don't need a surface, but 
>> a line.
>> Which is the solution please?
>>
>> imagine that the code I have is this:
>>
>> x=0:0.1:2;
>> y=0:0.2:4;
>> u=x+y;
>> z=3*u + 8;
>> plot3(x,y,z) //this is obviously wrong
> Why?
For a parametric curve in 3D, the scilab macro is "param3d".

S.
>>
>> Thanks a lot and sorry for the simple doubt
>>
>>
>>
>>
>> -- 
>> View this message in context: 
>> http://mailinglists.scilab.org/3d-curve-plot-tp4028615.html
>> Sent from the Scilab users - Mailing Lists Archives mailing list 
>> archive at Nabble.com.
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
>>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users



From martin at null-a.de  Thu Feb 13 10:52:53 2014
From: martin at null-a.de (Martin Helm)
Date: Thu, 13 Feb 2014 10:52:53 +0100
Subject: [Scilab-users] 3d curve plot
In-Reply-To: <1392205796285-4028615.post@n3.nabble.com>
References: <1392205796285-4028615.post@n3.nabble.com>
Message-ID: <52FC95F5.60607@null-a.de>

Am 12.02.2014 12:49, schrieb Jeibros:
> plot3(x,y,z) //this is obviously wrong

use param3d(x,y,z)



From paul.bignier at scilab-enterprises.com  Thu Feb 13 13:44:19 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Thu, 13 Feb 2014 13:44:19 +0100
Subject: [Scilab-users] Scilab vs Xcos
In-Reply-To: <1391958848959-4028555.post@n3.nabble.com>
References: <1391958848959-4028555.post@n3.nabble.com>
Message-ID: <52FCBE23.8060708@scilab-enterprises.com>


Bonjour,

Pourriez-vous svp nous envoyer en pi?ce jointe vos diagramme Xcos et 
script Scilab, pour que nous puissions reproduire l'erreur ?

Merci,
Bonne journ?e,
Paul


On 02/09/2014 04:14 PM, noelec57 wrote:
> Bonjour
>
> Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. Pour le
> moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis
> continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon syst?me en
> utilisant Xcos (mode graphique) et scilab (ligne de code). Malheureusement
> le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas
> exactement la m?me r?ponse. Par exemple, j'ai cherch? le point d'instabilit?
> avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes de gain
> critique. Idem, l'application d'un PID avec les m?mes valeurs ne fournit pas
> la m?e r?ponse( variation d'environ 10% !!).
>
> Je ne parviens pas ? trouver la raison de cette diff?rence.
>
> A titre d'exemple, avec la fonction de transfert en BO suivante :  60 /
> (1+8*s) * (1+2*s) * (1+s)
>
> le syst?me en BF ? retour unitaire  provoque des oscillations stables dans
> un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos.
>
> Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois
> prendre et surtout pourquoi cet ?cart ?
>
> Merci.
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Scilab Engineer & Xcos Developer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com



From antoine.monmayrant at laas.fr  Thu Feb 13 14:07:49 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Thu, 13 Feb 2014 14:07:49 +0100
Subject: [Scilab-users] Scilab vs Xcos
In-Reply-To: <52FCBE23.8060708@scilab-enterprises.com>
References: <1391958848959-4028555.post@n3.nabble.com>
 <52FCBE23.8060708@scilab-enterprises.com>
Message-ID: <52FCC3A5.7000805@laas.fr>

Bonjour Paul et noelec57,


Juste une remarque en passant, cette liste de mail est destin?e ? tous 
les utilisateurs de Scilab (utilisateurs 'internationaux') et l'anglais 
est normalement de rigueur.
Vous aurez beaucoup plus de chance d'avoir des r?ponses ? vos questions 
si vous pouvez les poser en anglais.
Il existe une liste francophone ici: users-fr at lists.scilab.org .
Je ne sais pas si elle est aussi active que la liste internationale...

Cordialement,

Antoine


  -----


Hi Paul and noelec57 (???),

Just a remark, this user list is supposed to be in English.
If you post your questions here, you might get way more answers if you 
do it in English...
There is a French user list here: users-fr at lists.scilab.org .
I don't know whether the French list is as active as the English one...

Cheers,

Antoine

-----






On 02/13/2014 01:44 PM, Paul Bignier wrote:
>
> Bonjour,
>
> Pourriez-vous svp nous envoyer en pi?ce jointe vos diagramme Xcos et 
> script Scilab, pour que nous puissions reproduire l'erreur ?
>
> Merci,
> Bonne journ?e,
> Paul
>
>
> On 02/09/2014 04:14 PM, noelec57 wrote:
>> Bonjour
>>
>> Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. 
>> Pour le
>> moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis
>> continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon 
>> syst?me en
>> utilisant Xcos (mode graphique) et scilab (ligne de code). 
>> Malheureusement
>> le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas
>> exactement la m?me r?ponse. Par exemple, j'ai cherch? le point 
>> d'instabilit?
>> avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes 
>> de gain
>> critique. Idem, l'application d'un PID avec les m?mes valeurs ne 
>> fournit pas
>> la m?e r?ponse( variation d'environ 10% !!).
>>
>> Je ne parviens pas ? trouver la raison de cette diff?rence.
>>
>> A titre d'exemple, avec la fonction de transfert en BO suivante :  60 /
>> (1+8*s) * (1+2*s) * (1+s)
>>
>> le syst?me en BF ? retour unitaire  provoque des oscillations stables 
>> dans
>> un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos.
>>
>> Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois
>> prendre et surtout pourquoi cet ?cart ?
>>
>> Merci.
>>
>>
>>
>> -- 
>> View this message in context: 
>> http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555.html
>> Sent from the Scilab users - Mailing Lists Archives mailing list 
>> archive at Nabble.com.
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
>


-- 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

  Antoine Monmayrant LAAS - CNRS
  7 avenue du Colonel Roche
  BP 54200
  31031 TOULOUSE Cedex 4
  FRANCE

  Tel:+33 5 61 33 64 59
  
  email : antoine.monmayrant at laas.fr
  permanent email : antoine.monmayrant at polytechnique.org

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

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From Serge.Steer at inria.fr  Fri Feb 14 14:38:22 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Fri, 14 Feb 2014 14:38:22 +0100
Subject: [Scilab-users] Scilab vs Xcos
In-Reply-To: <1391958848959-4028555.post@n3.nabble.com>
References: <1391958848959-4028555.post@n3.nabble.com>
Message-ID: <52FE1C4E.9060607@inria.fr>

Le 09/02/2014 16:14, noelec57 a ?crit :
> Bonjour
>
> Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. Pour le
> moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis
> continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon syst?me en
> utilisant Xcos (mode graphique) et scilab (ligne de code). Malheureusement
> le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas
> exactement la m?me r?ponse. Par exemple, j'ai cherch? le point d'instabilit?
> avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes de gain
> critique. Idem, l'application d'un PID avec les m?mes valeurs ne fournit pas
> la m?e r?ponse( variation d'environ 10% !!).
>
> Je ne parviens pas ? trouver la raison de cette diff?rence.
>
> A titre d'exemple, avec la fonction de transfert en BO suivante :  60 /
> (1+8*s) * (1+2*s) * (1+s)
>
> le syst?me en BF ? retour unitaire  provoque des oscillations stables dans
> un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos.
Vous ne dites pas comment vous avez obtenu ces deux valeurs. pour 
calculer la valeur du gain critique vous pouvez utiliser la fonction 
kpure de Scilab
h=60 /((1+8*%s) * (1+2*%s) * (1+%s));
Ki=kpure(h)  //->0.28125
//V?rification
H=(Ki*h) /.(1.0);
roots(H.den)

Si sous Xcos vous avez obtenu ce gain par simulation il faut savoir que 
l'integration num?rique repose sur des tol?rances. Dans xcos ces 
tol?rances sont par d?faut "tol?rantes". pour am?liorer la pr?cision des 
r?sultats vous devez sp?cifier des tol?rance absolue et relatives plus 
strictes (menu: Simulation/Configurer)
>   
> Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois
> prendre et surtout pourquoi cet ?cart ?
>
> Merci.
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users



From antoine.monmayrant at laas.fr  Fri Feb 14 17:08:31 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Fri, 14 Feb 2014 17:08:31 +0100
Subject: [Scilab-users] SaveAndExecuteFileAction ->
	ChangeDirectoryAndSaveAndExecuteFileAction
Message-ID: <52FE3F7F.3080509@laas.fr>

Hi everyone,

I would like to add a new button / new action to Scinotes that behaves 
in a slightly different way than the 'F5 Save and execute'.
Basically, I would like to first change to the directory of the file 
before executing it:
     1) Change to the directory that contains the file active in 
scinotes (the from which I launch the action).
     2) Save the file.
     3) Execute the file.

Is that possible without dissecting org.scilab.modules.scinotes.jar ?
As an alternative, if someone knows a way to guess from within a script 
file the path to the said script, that would also do the trick.
(and no, 'get_absolute_file_path' does not work as the script file is 
not necessarily opened in scilab)

Antoine


From rm.engineer84 at gmail.com  Sun Feb 16 17:54:10 2014
From: rm.engineer84 at gmail.com (R M)
Date: Sun, 16 Feb 2014 11:54:10 -0500
Subject: [Scilab-users] how to install modules scilab 5.1.1
Message-ID: <CADKJHGa5NJZgJXAdYy8RZRj_i3X32-yCFETANbFV5eWV+_ZDeg@mail.gmail.com>

Hi,

I have scilab 5.1.1 installed. I want to install some new tool boxes.

How would I go about doing the same.

Thanks and Regards,
RM
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From Christophe.Dang at sidel.com  Mon Feb 17 08:56:21 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Mon, 17 Feb 2014 08:56:21 +0100
Subject: [Scilab-users] how to install modules scilab 5.1.1
In-Reply-To: <CADKJHGa5NJZgJXAdYy8RZRj_i3X32-yCFETANbFV5eWV+_ZDeg@mail.gmail.com>
References: <CADKJHGa5NJZgJXAdYy8RZRj_i3X32-yCFETANbFV5eWV+_ZDeg@mail.gmail.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F32670F02A@301EX00100.sidel.com>

Hello, 

> De la part de R M
> Envoy? : dimanche 16 f?vrier 2014 17:54
>
> I want to install some new tool boxes.
>
> How would I go about doing the same.

Do you mean Atoms modules?

Maybe you could have a look at

http://wiki.scilab.org/Modules

http://atoms.scilab.org/

Hope this helps

regards

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From communication at scilab-enterprises.com  Mon Feb 17 09:16:10 2014
From: communication at scilab-enterprises.com (Scilab Communications)
Date: Mon, 17 Feb 2014 09:16:10 +0100
Subject: [Scilab-users] ScilabTEC 2014 program is now online!
Message-ID: <5301C54A.1080408@scilab-enterprises.com>


          Is this email not displaying correctly?
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          <http://www.scilab.org/community/news/20140217>

scilabtec <http://www.scilabtec.com>


    ScilabTEC 2014 program is now online


Two-day conference with:
2 keynote speakers:
- Alan Edelman, Professor of Applied Mathematics, MIT?
- Philippe Marchal, Deputy Director On Board/Soil Systems and Space 
Dynamics, CNES

and also high quality presentations and innovative applications in 
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Sysfera, Structures, Esterline, Upper Austria University of Applied 
Sciences, CNES, University of Luxembourg, Enginsoft, CEREMA, 
Cospas-Sarsat, TBSS.c3e, Inria and GEOLAB-CNRS.

Discover the complete program and register on http://www.scilabtec.com/

The first evening, participants may meet over dinner with the organizers 
during a moment of conviviality and exchange between all.


        REGISTER NOW <http://scilabtec.com/index.php/registration>
        (limited seating)

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          <mailto:communication at scilab-enterprises.com>
          143bis rue Yves Le Coz - 78000 Versailles |
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From noelec57 at yahoo.fr  Sun Feb 16 11:54:23 2014
From: noelec57 at yahoo.fr (noelec57)
Date: Sun, 16 Feb 2014 02:54:23 -0800 (PST)
Subject: [Scilab-users] Scilab vs Xcos
In-Reply-To: <52FE1C4E.9060607@inria.fr>
References: <1391958848959-4028555.post@n3.nabble.com>
 <52FE1C4E.9060607@inria.fr>
Message-ID: <1392548017.37558.YahooMailNeo@web172506.mail.ir2.yahoo.com>

Bonjour et Merci

J'ai pris note de votre message mais je n'ai pas eu encore assez de temps pour m'y pencher s?rieusement.?

N?anmoins je pense que je dois commettre un autre type d'erreur due ? ma m?connaissance du logiciel. Car en plus des petits ?carts, j'obtiens parfois des r?sultats tr?s surprenants lorsque j'essaie d'utiliser un correcteur PID. Les r?sultats sous Xcos et Scilab sont trop diff?rents.

Je me permets de vous joindre le fruit de ma r?flexion actuelle sous la forme de fichiers xcos et Scilab, ainsi qu'une petite note explicative. Je n'ai nullement l'intention de vous faire travailler ? ma place, mais peut ?tre que vous verrez instantan?ment ce qui ne va pas.

Le point de d?part ?tait de faire ?tudier des fonctions de transfert avec correcteurs PID mais je voulais ?pargner aux ?tudiants le code scilab et donc utiliser la version "graphique" en utilisant Xcos et ses sch?mas blocs. Mais actuellement je suis un peu bloqu?.

Cordialement

Noel DEMISSY
Enseignant.




________________________________
 De?: Serge Steer [via Scilab / Xcos - Mailing Lists Archives] <ml-node+s994242n4028640h56 at n3.nabble.com>
??: noelec57 <noelec57 at yahoo.fr> 
Envoy? le : Vendredi 14 f?vrier 2014 14h39
Objet?: Re: Scilab vs Xcos
 


Le 09/02/2014 16:14, noelec57 a ?crit : 

> Bonjour 
> 
> Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. Pour le 
> moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis 
> continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon syst?me en 
> utilisant Xcos (mode graphique) et scilab (ligne de code). Malheureusement 
> le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas 
> exactement la m?me r?ponse. Par exemple, j'ai cherch? le point d'instabilit? 
> avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes de gain 
> critique. Idem, l'application d'un PID avec les m?mes valeurs ne fournit pas 
> la m?e r?ponse( variation d'environ 10% !!). 
> 
> Je ne parviens pas ? trouver la raison de cette diff?rence. 
> 
> A titre d'exemple, avec la fonction de transfert en BO suivante : ?60 / 
> (1+8*s) * (1+2*s) * (1+s) 
> 
> le syst?me en BF ? retour unitaire ?provoque des oscillations stables dans 
> un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos. Vous ne dites pas comment vous avez obtenu ces deux valeurs. pour 
calculer la valeur du gain critique vous pouvez utiliser la fonction 
kpure de Scilab 
h=60 /((1+8*%s) * (1+2*%s) * (1+%s)); 
Ki=kpure(h) ?//->0.28125 
//V?rification 
H=(Ki*h) /.(1.0); 
roots(H.den) 

Si sous Xcos vous avez obtenu ce gain par simulation il faut savoir que 
l'integration num?rique repose sur des tol?rances. Dans xcos ces 
tol?rances sont par d?faut "tol?rantes". pour am?liorer la pr?cision des 
r?sultats vous devez sp?cifier des tol?rance absolue et relatives plus 
strictes (menu: Simulation/Configurer) 

> ? 
> Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois 
> prendre et surtout pourquoi cet ?cart ? 
> 
> Merci. 
> 
> 
> 
> -- 
> View this message in context: http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com. 
> _______________________________________________ 
> users mailing list 
> [hidden email] 
> http://lists.scilab.org/mailman/listinfo/users
_______________________________________________ 
users mailing list 
[hidden email] 
http://lists.scilab.org/mailman/listinfo/users


________________________________
 
If you reply to this email, your message will be added to the discussion below:http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555p4028640.html 
To unsubscribe from Scilab vs Xcos, click here.
NAML

Scilab vs Xcos.doc (374K) <http://mailinglists.scilab.org/attachment/4028652/0/Scilab%20vs%20Xcos.doc>
systeme_C_ZN.xcos (90K) <http://mailinglists.scilab.org/attachment/4028652/1/systeme_C_ZN.xcos>
systeme_PID.xcos (187K) <http://mailinglists.scilab.org/attachment/4028652/2/systeme_PID.xcos>




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View this message in context: http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555p4028652.html
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From john.bingham at tiscali.co.uk  Mon Feb 17 21:51:15 2014
From: john.bingham at tiscali.co.uk (john)
Date: Mon, 17 Feb 2014 12:51:15 -0800 (PST)
Subject: [Scilab-users] Xcos PID controller problem
Message-ID: <1392670275497-4028669.post@n3.nabble.com>

Hello,
I'm new to Scilab and Xcos so may be making a simple mistake, but I have the
following problem.  I created an Xcos model of a simple mass-spring-damper
with PID control using the data from the Matlab example shown  here
<http://ctms.engin.umich.edu/CTMS/index.php?example=Introduction&section=ControlPID> 
.

The Xcos results are the same as the Matlab example except for the case when
all three gains are used as follows Kp=350, Ki=300 and Kd=50 .

My result looks like this (red line) and is clearly giving a different
response to the Matlab example for the same gain values.
  <http://mailinglists.scilab.org/file/n4028669/PID.png> 
I have tried different solvers and time steps, but this doesn't seem to be
the problem.  I have also modelled the problem in Mathcad 7, Mathcad Prime 3
and using csim in Scilab and all those results agree broadly with the Matlab
example.

Any advice would be greatly appreciated and I have attached the Xcos file
for information. spring-damper-PID.zcos
<http://mailinglists.scilab.org/file/n4028669/spring-damper-PID.zcos>  




--
View this message in context: http://mailinglists.scilab.org/Xcos-PID-controller-problem-tp4028669.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From Serge.Steer at inria.fr  Mon Feb 17 17:11:53 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Mon, 17 Feb 2014 17:11:53 +0100
Subject: [Scilab-users] Fwd: Re:  Scilab vs Xcos
In-Reply-To: <5301BD62.5050105@scilab-enterprises.com>
References: <1392547493.36083.YahooMailNeo@web172502.mail.ir2.yahoo.com>
 <5301BD62.5050105@scilab-enterprises.com>
Message-ID: <530234C9.5070606@inria.fr>

Le 17/02/2014 08:42, Paul Bignier a ?crit :
>
> -------- Original Message --------
> Subject: 	Re: [Scilab-users] Scilab vs Xcos
> Date: 	Sun, 16 Feb 2014 10:44:53 +0000 (GMT)
> From: 	noel demissy <noelec57 at yahoo.fr>
> Reply-To: 	noel demissy <noelec57 at yahoo.fr>
> To: 	Paul Bignier <paul.bignier at scilab-enterprises.com>
>
>
>
> Bonjour
>
> Merci de votre r?ponse. Je vous joins 3 fichiers : scilab, xcos et un 
> "word" explicatif.
>
> Comme je l'ai mentionn?, je d?couvre ces logiciels. Initialement j'ai 
> pr?vu de faire travailler des ?tudiants sur des mod?les de syst?mes 
> asservis mais je voulais porter le travail fait initialement avec 
> Scilab sous Xcos car je trouvais plus simple de leur faire manipuler 
> des blocs sans rentrer dans le code.
>
Je confirme ce que j'avais dit dans un precedent mail. Le probleme avac 
la simulation Xcos est les r?glage des tol?rances de l'integrateur
avec une tol absolue de 1e-8 et une relative de 1e-9 la gain de 0.281 
assure une quasi stabilit?.

Je vous attache une version de votre sch?ma parametr?e avec le gain 
calcul? par kpure
Serge Steer
> Mes erreurs proviennent peut ?tre sans aucun doute de la 
> m?connaissance du logiciel et en partie des param?tres d'?tude.
>
> En vous remerciant d'avance.
>
> Noel DEMISSY
>
> ------------------------------------------------------------------------
> *De :* Paul Bignier <paul.bignier at scilab-enterprises.com>
> *? :* International users mailing list for Scilab. 
> <users at lists.scilab.org>; noelec57 at yahoo.fr
> *Envoy? le :* Jeudi 13 f?vrier 2014 13h44
> *Objet :* Re: [Scilab-users] Scilab vs Xcos
>
>
> Bonjour,
>
> Pourriez-vous svp nous envoyer en pi?ce jointe vos diagramme Xcos et
> script Scilab, pour que nous puissions reproduire l'erreur ?
>
> Merci,
> Bonne journ?e,
> Paul
>
>
> On 02/09/2014 04:14 PM, noelec57 wrote:
> > Bonjour
> >
> > Je rejoins en tant qu'enseignant les utilisateurs de Scilab et Xcos. 
> Pour le
> > moment j'essaie de l'utiliser pour la mod?lisation de syst?mes asservis
> > continus avec PID. Je suis parvenu ? obtenir la r?ponse de mon 
> syst?me en
> > utilisant Xcos (mode graphique) et scilab (ligne de code). 
> Malheureusement
> > le m?me syst?me ?tudi? avec la m?me fonction de transfert ne fournit pas
> > exactement la m?me r?ponse. Par exemple, j'ai cherch? le point 
> d'instabilit?
> > avec la m?thode Ziegler Nichols. j'obtiens deux valeurs diff?rentes 
> de gain
> > critique. Idem, l'application d'un PID avec les m?mes valeurs ne 
> fournit pas
> > la m?e r?ponse( variation d'environ 10% !!).
> >
> > Je ne parviens pas ? trouver la raison de cette diff?rence.
> >
> > A titre d'exemple, avec la fonction de transfert en BO suivante :  60 /
> > (1+8*s) * (1+2*s) * (1+s)
> >
> > le syst?me en BF ? retour unitaire  provoque des oscillations 
> stables dans
> > un cas avec un gain critique de 0,281 sous scilab et 0,287 sous xcos.
> >
> > Peut ?tre que quelqu'un peut me dire, lequel des deux r?sultats je dois
> > prendre et surtout pourquoi cet ?cart ?
> >
> > Merci.
> >
> >
> >
> > --
> > View this message in context: 
> http://mailinglists.scilab.org/Scilab-vs-Xcos-tp4028555.html
> > Sent from the Scilab users - Mailing Lists Archives mailing list 
> archive at Nabble.com.
> > _______________________________________________
> > users mailing list
> > users at lists.scilab.org <mailto:users at lists.scilab.org>
> > http://lists.scilab.org/mailman/listinfo/users
>
> -- 
> Paul BIGNIER
> Scilab Engineer & Xcos Developer
> -----------------------------------------------------------
> Scilab Enterprises
> 143bis rue Yves Le Coz - 78000 Versailles, France
> Phone: +33.1.80.77.04.69
> http://www.scilab-enterprises.com <http://www.scilab-enterprises.com/>
>
>
>
>
>

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From mobash2007 at gmail.com  Tue Feb 18 00:33:35 2014
From: mobash2007 at gmail.com (Mohammed Bashir)
Date: Mon, 17 Feb 2014 15:33:35 -0800
Subject: [Scilab-users] inquiry
In-Reply-To: <CABtpHR+ybHooRa0wYP9a3_aKGjFwBXKk6KqXdK_OykQeeMUxkw@mail.gmail.com>
References: <CABtpHR+ybHooRa0wYP9a3_aKGjFwBXKk6KqXdK_OykQeeMUxkw@mail.gmail.com>
Message-ID: <CABtpHR+BTMyBLN+Yjjut5=PwH8xLoz9EFMBoq7K7599mkr66sA@mail.gmail.com>

is scilab equivalent to matlab



On Mon, Nov 25, 2013 at 3:06 PM, Mohammed Bashir <mobash2007 at gmail.com>wrote:

>
> is scilab equivalent to matlab
>
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From paul.bignier at scilab-enterprises.com  Tue Feb 18 09:06:40 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Tue, 18 Feb 2014 09:06:40 +0100
Subject: [Scilab-users] inquiry
In-Reply-To: <CABtpHR+BTMyBLN+Yjjut5=PwH8xLoz9EFMBoq7K7599mkr66sA@mail.gmail.com>
References: <CABtpHR+ybHooRa0wYP9a3_aKGjFwBXKk6KqXdK_OykQeeMUxkw@mail.gmail.com>
 <CABtpHR+BTMyBLN+Yjjut5=PwH8xLoz9EFMBoq7K7599mkr66sA@mail.gmail.com>
Message-ID: <53031490.5030609@scilab-enterprises.com>


Hi Mohammed,

Scilab and Matlab are meant for the same purposes and share many similar 
features, but their semantic, function names and conventions are not 
exactly the same.

So no, they are not directly equivalent, but a Scilab job is often 
translatable in Matlab, and vice versa.
Check out the Matlab-Scilab equivalents 
<http://help.scilab.org/docs/5.4.1/fr_FR/section_36184e52ee88ad558380be4e92d3de21.html> 
<http://help.scilab.org/docs/5.4.1/fr_FR/section_36184e52ee88ad558380be4e92d3de21.html>help 
page for more information.

Regards,
Paul


On 02/18/2014 12:33 AM, Mohammed Bashir wrote:
> is scilab equivalent to matlab
>
>
>
> On Mon, Nov 25, 2013 at 3:06 PM, Mohammed Bashir <mobash2007 at gmail.com 
> <mailto:mobash2007 at gmail.com>> wrote:
>
>
>     is scilab equivalent to matlab
>
>
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Scilab Engineer & Xcos Developer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From Serge.Steer at inria.fr  Tue Feb 18 12:04:49 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Tue, 18 Feb 2014 12:04:49 +0100
Subject: [Scilab-users] Xcos PID controller problem
In-Reply-To: <1392670275497-4028669.post@n3.nabble.com>
References: <1392670275497-4028669.post@n3.nabble.com>
Message-ID: <53033E51.2070802@inria.fr>

The PID controller is an improper transfer function (degree of 
num>degree of den). In Xcos the derivative term of the PID bloc is 
computed by an approximation
which seems to fail in your context.

A solution should be to replace the PID bloc with a transfert function 
block made proper adding a very small term in s^2 for the denominator 
(sse the attched diagram)

Please report the problem in http://bugzilla.scilab.org/

Serge Steer

Le 17/02/2014 21:51, john a ?crit :
> Hello,
> I'm new to Scilab and Xcos so may be making a simple mistake, but I have the
> following problem.  I created an Xcos model of a simple mass-spring-damper
> with PID control using the data from the Matlab example shown  here
> <http://ctms.engin.umich.edu/CTMS/index.php?example=Introduction&section=ControlPID>
> .
>
> The Xcos results are the same as the Matlab example except for the case when
> all three gains are used as follows Kp=350, Ki=300 and Kd=50 .
>
> My result looks like this (red line) and is clearly giving a different
> response to the Matlab example for the same gain values.
>    <http://mailinglists.scilab.org/file/n4028669/PID.png>
> I have tried different solvers and time steps, but this doesn't seem to be
> the problem.  I have also modelled the problem in Mathcad 7, Mathcad Prime 3
> and using csim in Scilab and all those results agree broadly with the Matlab
> example.
>
> Any advice would be greatly appreciated and I have attached the Xcos file
> for information. spring-damper-PID.zcos
> <http://mailinglists.scilab.org/file/n4028669/spring-damper-PID.zcos>
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/Xcos-PID-controller-problem-tp4028669.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>

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From matiasb at gmail.com  Tue Feb 18 20:59:10 2014
From: matiasb at gmail.com (Matiasb)
Date: Tue, 18 Feb 2014 11:59:10 -0800 (PST)
Subject: [Scilab-users] How to get a reguar sampled vector in Scilab
Message-ID: <1392753550766-4028712.post@n3.nabble.com>

I'm trying to program function (or even better it it already exists) in
scilab that calculates a regular timed samples of values. IE: I have a
vector 'values' which defines contains the value of a signal at different
times. This times are in the vector 'times'. So at time times(N), the signal
has value values(N). At the moment the times are not regular, so the
variable 'times' and 'values' can look like:

times = [0, 2, 6, 8, 14] 
values= [5, 9, 10, 1, 6]
This represents that the signal had value 5 from second 0 to second 2. Value
9 from second 2 to second 6, etc. Therefore, if I want to calculate the
signal average value I can not just calculate the average of vector
'values'. This is because for example the signal can be for a long time with
the same value, but there will be only one value in the vector. One option
is to take the deltaT to calculate the media, but I will also need to
perform other calculations:average, etc.

Other option is to create a function that given a deltaT, samples the time
and values vectors to produce an equally spaced timeVector and corresponding
values. For example, with deltaT=2 and the previous vectors,

[sampledTime, sampledValues] = regularSample(times, values, 2)
sampledTime = [0, 2, 4, 6, 8, 10, 12, 14]
sampledValues = [5, 9, 9, 10, 1, 1, 1, 6]

This is easy if deltaT is small enough to fit exactly with all the times. If
the deltaT is bigger, then the average of values or some aproximation must
be done...

Is there anything already done in Scilab? How can this function be
programmed?

Thanks a lot! PS: I don't know if this is the correct forum to post scilab
questions, so any pointer would also be useful.



--
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From serge.steer at inria.fr  Tue Feb 18 22:26:03 2014
From: serge.steer at inria.fr (Serge Steer)
Date: Tue, 18 Feb 2014 22:26:03 +0100 (CET)
Subject: [Scilab-users] How to get a reguar sampled vector in Scilab
In-Reply-To: <1392753550766-4028712.post@n3.nabble.com>
References: <1392753550766-4028712.post@n3.nabble.com>
Message-ID: <1213788196.680525.1392758762995.JavaMail.zimbra@inria.fr>

I think there is a little mistake in the sampledValues you are expecting:
 times = [0, 2, 6, 8, 14]
 values= [5, 9, 10, 1, 6]
sampledTime =   [0, 2, 4, 6,  8, 10, 12, 14]
sampledValues = [5, 9, 9, 10, 1,  1,  1, 6] 
According to the rule used for the previous values, the last value of sampledValues must be 1 and not 6

Here is a code doing what you expect (but with a different last point)
times = [0, 2, 6, 8, 14];
values= [5, 9, 10, 1, 6];

sampletimes=0:14;
V=zeros(sampletimes);
for k=1:size(times,'*')-1
  V(sampletimes>=times(k)&sampletimes<times(k+1))=values(k);
end
V(sampletimes>times($))=timesvalues($);
clf;plot(sampletimes,V,'-+')

//You can also use linear interpolation
V1=interpln([times;values],sampletimes);
plot(sampletimes,V1,'r-+')
//or Splin interpolation
V2=interp(sampletimes,times,values,splin(times,values))
plot(sampletimes,V2,'m-*')

Serge Steer
----- Mail original -----
> De: "Matiasb" <matiasb at gmail.com>
> ?: users at lists.scilab.org
> Envoy?: Mardi 18 F?vrier 2014 20:59:10
> Objet: [Scilab-users] How to get a reguar sampled vector in Scilab
> 
> I'm trying to program function (or even better it it already exists) in
> scilab that calculates a regular timed samples of values. IE: I have a
> vector 'values' which defines contains the value of a signal at different
> times. This times are in the vector 'times'. So at time times(N), the signal
> has value values(N). At the moment the times are not regular, so the
> variable 'times' and 'values' can look like:
> 
> times = [0, 2, 6, 8, 14]
> values= [5, 9, 10, 1, 6]
> This represents that the signal had value 5 from second 0 to second 2. Value
> 9 from second 2 to second 6, etc. Therefore, if I want to calculate the
> signal average value I can not just calculate the average of vector
> 'values'. This is because for example the signal can be for a long time with
> the same value, but there will be only one value in the vector. One option
> is to take the deltaT to calculate the media, but I will also need to
> perform other calculations:average, etc.
> 
> Other option is to create a function that given a deltaT, samples the time
> and values vectors to produce an equally spaced timeVector and corresponding
> values. For example, with deltaT=2 and the previous vectors,
> 
> [sampledTime, sampledValues] = regularSample(times, values, 2)
> sampledTime = [0, 2, 4, 6, 8, 10, 12, 14]
> sampledValues = [5, 9, 9, 10, 1, 1, 1, 6]
> 
> This is easy if deltaT is small enough to fit exactly with all the times. If
> the deltaT is bigger, then the average of values or some aproximation must
> be done...
> 
> Is there anything already done in Scilab? How can this function be
> programmed?
> 
> Thanks a lot! PS: I don't know if this is the correct forum to post scilab
> questions, so any pointer would also be useful.
> 
> 
> 
> --
> View this message in context:
> http://mailinglists.scilab.org/How-to-get-a-reguar-sampled-vector-in-Scilab-tp4028712.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at
> Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
> 


From Christophe.Dang at sidel.com  Wed Feb 19 09:20:05 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Wed, 19 Feb 2014 09:20:05 +0100
Subject: [Scilab-users] inquiry
In-Reply-To: <CABtpHR+BTMyBLN+Yjjut5=PwH8xLoz9EFMBoq7K7599mkr66sA@mail.gmail.com>
References: <CABtpHR+ybHooRa0wYP9a3_aKGjFwBXKk6KqXdK_OykQeeMUxkw@mail.gmail.com>
 <CABtpHR+BTMyBLN+Yjjut5=PwH8xLoz9EFMBoq7K7599mkr66sA@mail.gmail.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3267A40F6@301EX00100.sidel.com>

Hello, 

> De la part de Mohammed Bashir
> Envoy? : mardi 18 f?vrier 2014 00:34
>
> is scilab equivalent to matlab

You might have a look at

Alan Edelman, Open Source and Traditional Technical Computing, MIT (2010)

https://www.scilab.org/content/download/395/2850/file/ScilabTec_Keynote.pdf

Best regards

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From yohann.morille at univ-angers.fr  Tue Feb 18 15:06:48 2014
From: yohann.morille at univ-angers.fr (Yohann)
Date: Tue, 18 Feb 2014 06:06:48 -0800 (PST)
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
Message-ID: <1392732408401-4028696.post@n3.nabble.com>

Hi all !!

First of all, thank you to all contributors of Scilab.
However, I have a problem to calculate the estimated error on each parameter
calculated with leastsq.

For example if I have the simple following function  to fit:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
function y = fun2fit(x, c)
  y =  c(1)*x*x + c(2)*x + c(3);
endfunction 

function e = myerror(c, x, y)
  e = fun2fit(x, c) - y;
endfunction 

// Data
x = [ 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6]';
y = [5.02  6.08  3.33 -0.93   -0.22  7.83  16.52 15.55  2.67 -11.42 -11.78 
5.09 25.25]';   

// First guess
c0 = [1 1 1]';
y0 = fun2fit(x, c0); 

// least square 
[f, copt] = leastsq(list(myerror, x, y), c0) 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I'd like to have an estimated error on each of the 3 element of copt.
Any idea ?

Thanks !
Y





--
View this message in context: http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From ronan_2 at hotmail.com  Tue Feb 18 20:12:10 2014
From: ronan_2 at hotmail.com (Ronan_)
Date: Tue, 18 Feb 2014 11:12:10 -0800 (PST)
Subject: [Scilab-users] Installation of SIVP fo Scilab
Message-ID: <1392750730616-4028711.post@n3.nabble.com>

I can't execute the builder file of SIVP because "this module need a
compileur"


-->exec('builder.sce')
 
-->mode(-1);
Cr?ation des macros...
-- Cr?ation de [SIVPlib] (Macros) --
 !--error 10000 
tbx_builder_gateway : Ce module requiert un compilateur C mais celui-ci n'a
pas pu ?tre trouv?.
at line      27 of function tbx_builder_gateway called by :  
tbx_builder_gateway(toolbox_dir);
at line      35 of exec file called by :    
exec('builder.sce')
 


* on the read file it is written that we need a version of scilab older than
the 2.0 version but there are not avalaible anymore, maybe this could pose a
problem ?

* i have installed Eclipse (with mingw) for the occasion, maybe i can create
a link between Eclipse and Scilabe to solve the problem ?

* I also installed OPEN CV but i don't know what i have to do with it ? it
put itself automatically in the PATH but that's all for SIVP use ?


Thank you for your answer,

Sorry for my english,

Ronan SY



--
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From julian.estevez at ehu.es  Wed Feb 19 08:20:12 2014
From: julian.estevez at ehu.es (Jeibros)
Date: Tue, 18 Feb 2014 23:20:12 -0800 (PST)
Subject: [Scilab-users] 3d curve plot
In-Reply-To: <52FC96E1.6010105@utc.fr>
References: <1392205796285-4028615.post@n3.nabble.com>
 <52FC959D.60309@inria.fr> <52FC96E1.6010105@utc.fr>
Message-ID: <1392794412387-4028731.post@n3.nabble.com>

Hi,

I tested it and worked perfectly. Thanks a lot,

J



--
View this message in context: http://mailinglists.scilab.org/3d-curve-plot-tp4028615p4028731.html
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From antoine.monmayrant at laas.fr  Wed Feb 19 10:32:20 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Wed, 19 Feb 2014 10:32:20 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <1392732408401-4028696.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
Message-ID: <53047A24.90004@laas.fr>

On 02/18/2014 03:06 PM, Yohann wrote:
> Hi all !!
>
> First of all, thank you to all contributors of Scilab.
> However, I have a problem to calculate the estimated error on each parameter
> calculated with leastsq.
>
> For example if I have the simple following function  to fit:
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> function y = fun2fit(x, c)
>    y =  c(1)*x*x + c(2)*x + c(3);
> endfunction
>
> function e = myerror(c, x, y)
>    e = fun2fit(x, c) - y;
> endfunction
>
> // Data
> x = [ 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6]';
> y = [5.02  6.08  3.33 -0.93   -0.22  7.83  16.52 15.55  2.67 -11.42 -11.78
> 5.09 25.25]';
>
> // First guess
> c0 = [1 1 1]';
> y0 = fun2fit(x, c0);
>
> // least square
> [f, copt] = leastsq(list(myerror, x, y), c0)
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> I'd like to have an estimated error on each of the 3 element of copt.
> Any idea ?
What do you mean?
Do you want a confidence interval or any kind of "error bar" for each 
parameter?
Or any way to see how your fit is dependent on each parameter?
If it's the case, you might be interested in bootstraping or 
jackknifing: http://en.wikipedia.org/wiki/Resampling_(statistics)
These methods are quite ressource hungry but work quite well to measure 
the quality and robustness of your fit.

Cheers,

Antoine
>
> Thanks !
> Y
>
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users


-- 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

  Antoine Monmayrant LAAS - CNRS
  7 avenue du Colonel Roche
  BP 54200
  31031 TOULOUSE Cedex 4
  FRANCE

  Tel:+33 5 61 33 64 59
  
  email : antoine.monmayrant at laas.fr
  permanent email : antoine.monmayrant at polytechnique.org

+++++++++++++++++++++++++++++++++++++++++++++++++++++++



From arctica1963 at gmail.com  Wed Feb 19 15:15:51 2014
From: arctica1963 at gmail.com (Lester Anderson)
Date: Wed, 19 Feb 2014 14:15:51 +0000
Subject: [Scilab-users] Rounding error or precision setting?
Message-ID: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>

Hello,

Just a quick query. Not been using Scilab for a while, so maybe I have
missed something, but is there a built-in precision setting for working
with real and imaginary functions?

Tried the Euler formula (special case) in Scilab 5.4.1:

-->x=cos(%pi)+(%i*sin(%pi))
 x  =

  - 1. + 1.225D-16i

-->y=%e^(%i*%pi)
 y  =

  - 1. + 1.225D-16i

The real part is fine, but the complex has a measured value (approaching
zero). Is there a way to tell Scilab if this gets beyond a limit to round
off at zero say?

Sure this is an easy one!

Cheers

Lester
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From vogt at centre-cired.fr  Wed Feb 19 15:24:33 2014
From: vogt at centre-cired.fr (Adrien Vogt-Schilb)
Date: Wed, 19 Feb 2014 15:24:33 +0100
Subject: [Scilab-users] Rounding error or precision setting?
In-Reply-To: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>
References: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>
Message-ID: <5304BEA1.20007@centre-cired.fr>

Hi

The function *clean *does that:


clean(cos(%pi)+%i*sin(%pi))


Note that the limited precision of floating point numbers is a general 
issue in computer science. 
http://en.wikipedia.org/wiki/Floating_point#Representable_numbers.2C_conversion_and_rounding

You should be aware of that for instance when testing numbers, as in:

if cos(%pi)+%i*sin(%pi) == -1
disp("i am a mathematician")
else
disp("i am a computer")
end

if abs(cos(%pi)+%i*sin(%pi) +1)<1d-8
disp("yep")
else
disp("nope")
end

or when you calculate indefinite integrals.

Also note that some modules on ATOMS and scilabfilexchange allow to make 
computation with arbitrary (but not infenitesimal) precision.


On 19/02/2014 15:15, Lester Anderson wrote:
> Hello,
> Just a quick query. Not been using Scilab for a while, so maybe I have 
> missed something, but is there a built-in precision setting for 
> working with real and imaginary functions?
> Tried the Euler formula (special case) in Scilab 5.4.1:
> -->x=cos(%pi)+(%i*sin(%pi))
>  x  =
>
>   - 1. + 1.225D-16i
>
> -->y=%e^(%i*%pi)
>  y  =
>
>   - 1. + 1.225D-16i
> The real part is fine, but the complex has a measured value 
> (approaching zero). Is there a way to tell Scilab if this gets beyond 
> a limit to round off at zero say?
> Sure this is an easy one!
> Cheers
>
> Lester
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users


-- 
Adrien Vogt-Schilb
PhD Student (Cired)

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From Christophe.Dang at sidel.com  Wed Feb 19 15:25:41 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Wed, 19 Feb 2014 15:25:41 +0100
Subject: [Scilab-users] Rounding error or precision setting?
In-Reply-To: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>
References: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3267A4903@301EX00100.sidel.com>

Hello,

> De la part de Lester Anderson
> Envoy? : mercredi 19 f?vrier 2014 15:16
>
> Is there a way to tell Scilab if this gets beyond a limit to round off
> at zero say?

Maybe format() or clean() ?

http://help.scilab.org/docs/5.4.1/en_US/format.html
http://help.scilab.org/docs/5.4.1/en_US/clean.html

Best regards

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

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From arctica1963 at gmail.com  Wed Feb 19 15:30:25 2014
From: arctica1963 at gmail.com (Lester Anderson)
Date: Wed, 19 Feb 2014 14:30:25 +0000
Subject: [Scilab-users] Rounding error or precision setting?
In-Reply-To: <3B5FFC67498DFF49AE7271A584867D16F3267A4903@301EX00100.sidel.com>
References: <CAE3taFDdZ8oDBCYLxgNuie=KgvE5na8Q3t18Q77UOoc0OBrrYw@mail.gmail.com>
 <3B5FFC67498DFF49AE7271A584867D16F3267A4903@301EX00100.sidel.com>
Message-ID: <CAE3taFDfSnAMUf5MVxHqj6wCZS7CU0nfE+4OiZqzKzUKcfjBXA@mail.gmail.com>

Thanks for the pointer - knew it was a simple one!
Cheers


On 19 February 2014 14:25, Dang, Christophe <Christophe.Dang at sidel.com>wrote:

> Hello,
>
> > De la part de Lester Anderson
> > Envoy? : mercredi 19 f?vrier 2014 15:16
> >
> > Is there a way to tell Scilab if this gets beyond a limit to round off
> > at zero say?
>
> Maybe format() or clean() ?
>
> http://help.scilab.org/docs/5.4.1/en_US/format.html
> http://help.scilab.org/docs/5.4.1/en_US/clean.html
>
> Best regards
>
> --
> Christophe Dang Ngoc Chan
> Mechanical calculation engineer
>
> ______________________________________________________________________
>
> This e-mail may contain confidential and/or privileged information. If you
> are not the intended recipient (or have received this e-mail in error),
> please notify the sender immediately and destroy this e-mail. Any
> unauthorized copying, disclosure or distribution of the material in this
> e-mail is strictly forbidden.
> ______________________________________________________________________
> _______________________________________________
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> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
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From denis.crete at thalesgroup.com  Wed Feb 19 16:05:34 2014
From: denis.crete at thalesgroup.com (CRETE Denis)
Date: Wed, 19 Feb 2014 16:05:34 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated
	with	leastsq
In-Reply-To: <1392732408401-4028696.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
Message-ID: <22361_1392822336_5304C840_22361_9512_1_8F1D40232A0E68409E3FC23A30C3266201690C8E195C@THSONEA01CMS04P.one.grp>

Dear Yohann
The (x,y) dataset does not look like a parabola... (it resembles more  a type of x*sin(x) function). 
Trying to fit this dataset with a parabola, will  not only give unreliable result, but also will put a high challenge to error estimation algorithms...
Denis

-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de Yohann
Envoy??: mardi 18 f?vrier 2014 15:07
??: users at lists.scilab.org
Objet?: [Scilab-users] evaluate error on each parameter calculated with leastsq

Hi all !!

First of all, thank you to all contributors of Scilab.
However, I have a problem to calculate the estimated error on each parameter calculated with leastsq.

For example if I have the simple following function  to fit:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
function y = fun2fit(x, c)
  y =  c(1)*x*x + c(2)*x + c(3);
endfunction 

function e = myerror(c, x, y)
  e = fun2fit(x, c) - y;
endfunction 

// Data
x = [ 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6]';
y = [5.02  6.08  3.33 -0.93   -0.22  7.83  16.52 15.55  2.67 -11.42 -11.78 
5.09 25.25]';   

// First guess
c0 = [1 1 1]';
y0 = fun2fit(x, c0); 

// least square
[f, copt] = leastsq(list(myerror, x, y), c0) !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I'd like to have an estimated error on each of the 3 element of copt.
Any idea ?

Thanks !
Y





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From cfuttrup at gmail.com  Wed Feb 19 17:32:07 2014
From: cfuttrup at gmail.com (Claus Futtrup)
Date: Wed, 19 Feb 2014 17:32:07 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <1392732408401-4028696.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
Message-ID: <5304DC87.4020507@gmail.com>

Hi Yohan

I see that I'm not alone wondering a bit about what you'd like to do.

A mathematically solid and readily available technique to corner 
mathematical rounding errors and other errors of operation is called 
Interval Analysis.

For matlab there's INTLAB. See:
http://www.ti3.tu-harburg.de/~rump/intlab/

I'm sure it could be converted to Scilab without big trouble. Maybe I 
even have an old one laying around (??) somewhere ... maybe.

Another approach would be in a specific situation to apply the 
techniques of interval analysis, only centered around your concern ... 
and leave the rest of your script normal.

Best regards,
Claus

On 2/18/2014 15:06, Yohann wrote:
> Hi all !!
>
> First of all, thank you to all contributors of Scilab.
> However, I have a problem to calculate the estimated error on each parameter
> calculated with leastsq.
>
> For example if I have the simple following function  to fit:
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> function y = fun2fit(x, c)
>    y =  c(1)*x*x + c(2)*x + c(3);
> endfunction
>
> function e = myerror(c, x, y)
>    e = fun2fit(x, c) - y;
> endfunction
>
> // Data
> x = [ 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6]';
> y = [5.02  6.08  3.33 -0.93   -0.22  7.83  16.52 15.55  2.67 -11.42 -11.78
> 5.09 25.25]';
>
> // First guess
> c0 = [1 1 1]';
> y0 = fun2fit(x, c0);
>
> // least square
> [f, copt] = leastsq(list(myerror, x, y), c0)
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>
> I'd like to have an estimated error on each of the 3 element of copt.
> Any idea ?
>
> Thanks !
> Y
>
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
> .
>


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From barbanera at crbnet.it  Wed Feb 19 11:31:47 2014
From: barbanera at crbnet.it (bomber1978)
Date: Wed, 19 Feb 2014 02:31:47 -0800 (PST)
Subject: [Scilab-users] To find maximum value in a random curve
Message-ID: <1392805906969-4028741.post@n3.nabble.com>

Hi all,

I have a random 2D-curve which is defined by a set of points (I don't know
the equation of the curve), obtained by interpolation.
How can I find the maximum, minimum, & inflexion points on this curve.

Thank you very much!



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From ml-node+s994242n4028741h12 at n3.nabble.com  Wed Feb 19 11:31:47 2014
From: ml-node+s994242n4028741h12 at n3.nabble.com (bomber1978 [via Scilab / Xcos - Mailing Lists Archives])
Date: Wed, 19 Feb 2014 02:31:47 -0800 (PST)
Subject: [Scilab-users] To find maximum value in a random curve
Message-ID: <1392805906969-4028741.post@n3.nabble.com>

Hi all,

I have a random 2D-curve which is defined by a set of points (I don't know
the equation of the curve), obtained by interpolation.
How can I find the maximum, minimum, & inflexion points on this curve.

Thank you very much!




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From romain.desbats at ifsttar.fr  Wed Feb 19 11:34:40 2014
From: romain.desbats at ifsttar.fr (Romain Desbats)
Date: Wed, 19 Feb 2014 11:34:40 +0100 (CET)
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <365589264.1926236.1392804055518.JavaMail.root@ifsttar.fr>
Message-ID: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>

Dear Scilab users, 

I am running a simple electrical model in xcos (see attached). This model reads a .csv input file and outputs a variable to the workspace. The model works fine when I compile it and run it by using the menus in xcos. 

What I would like is to run it in batch mode from Scilab in order optimise the model parameters. 

My plan is to use xcos_simulate to compile the diagram, to modify the cpr variable generated by the compilation (to change the model parameters) and than to simulate the model with scicosim . 

The problem is that calling the cpr variable after the compilation results in kind of "freezing" the workspace. 

- The variable browser shows "N/A" for all the variables (from image 1 to image 2 attached) 
- Calling cpr does not give any result (image 3 attached) 

Does anyone has any idea of what is happening? 

I am using Scilab 5.4.1. 

My code is as follows: 

// parameters 
data=csvRead('input.csv',';'); 
input_current=evstr(data(:,1)); 
size1=length(input_current); 

C=1/10000; 
R=12900; 

T=0.0001; // timestep 

time=[0:T:(size1-1)*T]'; // in s 

end_time=time($)+T; // end time in s 

// loading Xcos functions 
loadScicos; 
loadXcosLibs(); 
exec(loadpallibs,-1); 

// loading model 
importXcosDiagram('graphic_model.xcos') 

// compilation: scs_m is the result of the import, 
xcos_simulate(scs_m,4) // '4' is to perform compilation 

tf=end_time; 

atol=1.e-8; 
rtol=1.e-9; 
ttol=1.e-10; 
deltat=tf; 
scale=0; 
hmax=0; 

tol=[atol,rtol,ttol,deltat,scale,hmax]; 

// PROBLEM COMES WHEN EXECUTING NEXT LINE 

state=cpr.state; // cpr variable came from the compilation 
sim=cpr.sim; 

cpr.sim.rpar(5)=T; // timestep 
cpr.sim.rpar(5)=0; // initialisation 
cpr.sim.rpar(7)=R; // resistance 
cpr.sim.rpar(8)=C; // capacitor 

// initialisation 
[state,t]=scicosim(state,0,tf,sim,'start',tol); 
// run 
[state,t]=scicosim(state,t,tf,sim,'run',tol) 
//end 
[state,t]=scicosim(state,t,tf,sim,'finish',tol); 

graph_voltage=graph_voltage.values; // output variable 

Thanks a lot for your help. 

Best regards, 


Romain 
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From yohann.morille at univ-angers.fr  Wed Feb 19 14:31:17 2014
From: yohann.morille at univ-angers.fr (Yohann)
Date: Wed, 19 Feb 2014 05:31:17 -0800 (PST)
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <53047A24.90004@laas.fr>
References: <1392732408401-4028696.post@n3.nabble.com> <53047A24.90004@laas.fr>
Message-ID: <1392816677490-4028742.post@n3.nabble.com>

Hi Antoine,
thank you for your answer but
what I need is a confidence interval on each parameter !
Cheers
Yohann




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From yohann.morille at univ-angers.fr  Wed Feb 19 17:10:57 2014
From: yohann.morille at univ-angers.fr (Yohann)
Date: Wed, 19 Feb 2014 08:10:57 -0800 (PST)
Subject: [Scilab-users] evaluate error on each parameter calculated
	with	leastsq
In-Reply-To: <22361_1392822336_5304C840_22361_9512_1_8F1D40232A0E68409E3FC23A30C3266201690C8E195C@THSONEA01CMS04P.one.grp>
References: <1392732408401-4028696.post@n3.nabble.com>
 <22361_1392822336_5304C840_22361_9512_1_8F1D40232A0E68409E3FC23A30C3266201690C8E195C@THSONEA01CMS04P.one.grp>
Message-ID: <1392826257532-4028748.post@n3.nabble.com>

yes I know Denis, It was just an example to illustrate my question.
My real dataset and function to fit are completely different and more
complex.
Thank you



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From paul.bignier at scilab-enterprises.com  Thu Feb 20 10:35:55 2014
From: paul.bignier at scilab-enterprises.com (paul.bignier at scilab-enterprises.com)
Date: Thu, 20 Feb 2014 10:35:55 +0100
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
Message-ID: <6a0f175ed0d6c0c5408403abfefaa077@scilab-enterprises.com>

 

 Hello Romain,

 Running your code in 5.4.1 just tells me that 'cpr' variable is unknown
when you call it at line "state=cpr.state;".

 So I replaced "xcos_simulate(scs_m,4)" by "cpr =
xcos_simulate(scs_m,4)" and it runs smooth ("-->cpr" yields an output)
until the end.

 I noted that you modifed cpr.sim.rpar(5) twice, but you probably meant
cpr.sim.rpar(6) the second time?
 cpr.sim.rpar(5)=T; // timestep
 cpr.sim.rpar(5)=0; // initialisation

 Otherwise, I didn't manage to reproduce your bug.

 Regards,
 Paul

 PS: you may want to use the Context to modify a diagram from batch, see
xcos_simulate help page [3]. It is safer to fully recompile Modelica
diagrams between simulations.

On 02/19/2014 11:34 AM, Romain Desbats wrote: 

> Dear Scilab users,
> 
> I am running a simple electrical model in xcos (see attached). This model reads a .csv input file and outputs a variable to the workspace. The model works fine when I compile it and run it by using the menus in xcos.
> 
> What I would like is to run it in batch mode from Scilab in order optimise the model parameters.
> 
> My plan is to use _xcos_simulate_ to compile the diagram, to modify the _cpr_ variable generated by the compilation (to change the model parameters) and than to simulate the model with _scicosim_.
> 
> The problem is that calling the _cpr_ variable after the compilation results in kind of "freezing" the workspace.
> 
> - The variable browser shows "N/A" for all the variables (from image 1 to image 2 attached)
> - Calling _cpr_ does not give any result (image 3 attached)
> 
> Does anyone has any idea of what is happening?
> 
> I am using Scilab 5.4.1.
> 
> My code is as follows:
> 
> // parameters
> data=csvRead('input.csv',';');
> input_current=evstr(data(:,1));
> size1=length(input_current);
> 
> C=1/10000;
> R=12900;
> 
> T=0.0001; // timestep
> 
> time=[0:T:(size1-1)*T]'; // in s
> 
> end_time=time($)+T; // end time in s
> 
> // loading Xcos functions
> loadScicos;
> loadXcosLibs();
> exec(loadpallibs,-1);
> 
> // loading model
> importXcosDiagram('graphic_model.xcos')
> 
> // compilation: scs_m is the result of the import,
> xcos_simulate(scs_m,4) // '4' is to perform compilation
> 
> tf=end_time;
> 
> atol=1.e-8;
> rtol=1.e-9;
> ttol=1.e-10;
> deltat=tf;
> scale=0;
> hmax=0;
> 
> tol=[atol,rtol,ttol,deltat,scale,hmax];
> 
> // PROBLEM COMES WHEN EXECUTING NEXT LINE
> 
> state=cpr.state; // cpr variable came from the compilation
> sim=cpr.sim;
> 
> cpr.sim.rpar(5)=T; // timestep
> cpr.sim.rpar(5)=0; // initialisation
> cpr.sim.rpar(7)=R; // resistance
> cpr.sim.rpar(8)=C; // capacitor
> 
> // initialisation
> [state,t]=scicosim(state,0,tf,sim,'start',tol);
> // run
> [state,t]=scicosim(state,t,tf,sim,'run',tol)
> //end
> [state,t]=scicosim(state,t,tf,sim,'finish',tol);
> 
> graph_voltage=graph_voltage.values; // output variable
> 
> Thanks a lot for your help.
> 
> Best regards,
> 
> Romain 
> 
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users [1]

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-----------------------------------------------------------
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Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com [2] 
 

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From Serge.Steer at inria.fr  Thu Feb 20 12:07:46 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Thu, 20 Feb 2014 12:07:46 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <1392816677490-4028742.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <53047A24.90004@laas.fr> <1392816677490-4028742.post@n3.nabble.com>
Message-ID: <5305E202.60906@inria.fr>

Le 19/02/2014 14:31, Yohann a ?crit :
> Hi Antoine,
> thank you for your answer but
> what I need is a confidence interval on each parameter !
The confidence interval on the computed parameters depends on the 
confidence interval  on your x and y data.

In your case where you are looking for polynomial fitting then 
perturbations on y  produces perturbation on the computed parameters  
roughly proportionnal to the conditionning of the matrix A=[x*x x ones(x)]

if c is the mean square solution of the probleme for  y and c1 is the 
mean square solution of the problem of y1 then
norm(c-c1)/norm(c)<=cond(A)*norm(y-y1)/norm(y)

x = [ 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6]';
y = [5.02  6.08  3.33 -0.93   -0.22  7.83  16.52 15.55  2.67 -11.42 -11.78 5.09 25.25]';

A=[x.^2 x ones(x)];

y1=y;y1=y1.*(1+0.000001*rand(y1));ey=norm(y-y1)/norm(y)
c1=A\y1;ec=norm(c-c1)/norm(c)

ec<=cond(A)*ey

the dependance with respect to perturbation on x is more difficult.
> Cheers
> Yohann
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028742.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>



From antoine.monmayrant at laas.fr  Thu Feb 20 09:04:58 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Thu, 20 Feb 2014 09:04:58 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <1392816677490-4028742.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <53047A24.90004@laas.fr> <1392816677490-4028742.post@n3.nabble.com>
Message-ID: <5305B72A.3090500@laas.fr>

On 02/19/2014 02:31 PM, Yohann wrote:
> Hi Antoine,
> thank you for your answer but
> what I need is a confidence interval on each parameter !
Well, so resampling can do the trick!

Antoine
> Cheers
> Yohann
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028742.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users


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  FRANCE

  Tel:+33 5 61 33 64 59
  
  email : antoine.monmayrant at laas.fr
  permanent email : antoine.monmayrant at polytechnique.org

+++++++++++++++++++++++++++++++++++++++++++++++++++++++



From stephane.mottelet at gmail.com  Thu Feb 20 10:00:38 2014
From: stephane.mottelet at gmail.com (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Thu, 20 Feb 2014 10:00:38 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <CAB4PXHea4gnnm3yC_SdZ=SXvCT0Fdbv0H22Dqd0sYfY9MbXX4w@mail.gmail.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <22361_1392822336_5304C840_22361_9512_1_8F1D40232A0E68409E3FC23A30C3266201690C8E195C@THSONEA01CMS04P.one.grp>
 <1392826257532-4028748.post@n3.nabble.com>
 <CAB4PXHea4gnnm3yC_SdZ=SXvCT0Fdbv0H22Dqd0sYfY9MbXX4w@mail.gmail.com>
Message-ID: <CAB4PXHddyLJuZ3Ly6Se70iWFLrO2gyG-2kaD1hD1e8VyOEMOpg@mail.gmail.com>

Here is a simple example where the derivative is approximated with the
"derivative" macro of Scilab.

S.


2014-02-20 9:43 GMT+01:00 St?phane Mottelet <stephane.mottelet at gmail.com>:

> Hello,
>
> If you can make the hypothesis that your data is corrupted by gaussian
> noise, then you can approximate the covariance matrix of your estimated
> parameters. Let p be the vector of parameters and r(p) the residual vector
> given by
>
> r(p)=sigma^(-1)*(y-Y(p))
>
> where y is your measuement vector, Y(p) the "simulated" measurement, sigma
> a diagonal matrix with the std error for each measurement. If we denote by
>
> drdp(p) the derivative (or jacobian matrix) of r with respect to p then
> the covariance matrice C of parameters can be estimated by
>
>
> C=F^(-1)
>
> where
>
> F=drdp(p)' * drdp(p)
>
> is the Fisher information matrix. The diagonal terms of V give you the
> variance of the parameters. Of course, even in the gaussian case, this is a
> crude approximation....
>
> S.
>
>
> 2014-02-19 17:10 GMT+01:00 Yohann <yohann.morille at univ-angers.fr>:
>
> yes I know Denis, It was just an example to illustrate my question.
>> My real dataset and function to fit are completely different and more
>> complex.
>> Thank you
>>
>>
>>
>> --
>> View this message in context:
>> http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028748.html
>> Sent from the Scilab users - Mailing Lists Archives mailing list archive
>> at Nabble.com.
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
>>
>
>
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From aweeks at hidglobal.com  Fri Feb 21 11:45:30 2014
From: aweeks at hidglobal.com (aweeks at hidglobal.com)
Date: Fri, 21 Feb 2014 10:45:30 +0000
Subject: [Scilab-users] Switching windows 'focus' in SciLab.
Message-ID: <OFE8F4EBB1.593D852E-ON80257C86.003A04ED-80257C86.003B1929@prox.com>


Hello All,

I have SciLab set up with a docked SciNotes and console.
Calling 'plot', in the SciLab script, creates a separate graphics window
which has the 'windows focus' on it.

Is there a way, within the running SciLab script, to switch the focus back
onto the console (specifically for keyboard input) ?

(SciLab 5.4.0 running in Windows XP SP3 32-bit).

Many thanks in anticipation.
                                          
 Adrian Weeks                             
 Development Engineer                     
                                          
                                          
 HID Global,                              
 3 Cae Gwyrdd,                            
 Green Meadow Springs                     
 Business Park,                           
 Cardiff CF15 7AB,                        
 United Kingdom.                          
 +44 (0)29 20528523                       
 (Office)                                 
 aweeks at hidglobal.com                     
 www.hidglobal.com                        
                                          

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From aweeks at hidglobal.com  Fri Feb 21 12:00:25 2014
From: aweeks at hidglobal.com (aweeks at hidglobal.com)
Date: Fri, 21 Feb 2014 11:00:25 +0000
Subject: [Scilab-users] Linking DLL from MS Visual C++ to SciLab.
Message-ID: <OF81BA601D.62094241-ON80257C86.003B2464-80257C86.003C76A0@prox.com>


Hello All,

I can create a DLL using Microsoft Visual C++ and I can link to the
exported functions in SciLab using 'link' and then call them using 'call'.
If I understand correctly, the exported functions have to return void and
pass values through the argument list pointers.

I have a third-party DLL that I would like to use in SciLab and where the
functions return types other than void.
The more elegant method would seem to be to use the API_Scilab gateway to
interface to the exported functions.

Can I / how do I link a DLL (compiled in Visual C++) to SciLab at the
'ilib_build' stage ?

(SciLab 5.4.0, Windows XP SP3 32-bit, Visual C++ 2008 Express).

Many thanks in anticipation.
                                          
 Adrian Weeks                             
 Development Engineer                     
                                          
                                          
 HID Global,                              
 3 Cae Gwyrdd,                            
 Green Meadow Springs                     
 Business Park,                           
 Cardiff CF15 7AB,                        
 United Kingdom.                          
 +44 (0)29 20528523                       
 (Office)                                 
 aweeks at hidglobal.com                     
 www.hidglobal.com                        
                                          

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From sgougeon at free.fr  Wed Feb 19 20:55:21 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Wed, 19 Feb 2014 20:55:21 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <5304DC87.4020507@gmail.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <5304DC87.4020507@gmail.com>
Message-ID: <53050C29.1000308@free.fr>

Le 19/02/2014 17:32, Claus Futtrup a ?crit :
> Hi Yohan
>
> I see that I'm not alone wondering a bit about what you'd like to do.
>
> A mathematically solid and readily available technique to corner 
> mathematical rounding errors and other errors of operation is called 
> Interval Analysis.
>
> For matlab there's INTLAB. See:
> http://www.ti3.tu-harburg.de/~rump/intlab/
>
> I'm sure it could be converted to Scilab without big trouble. Maybe I 
> even have an old one laying around (??) somewhere ... maybe.
Yes indeed, here : http://www-sop.inria.fr/coprin/logiciels/Int4Sci/

Samuel


From jasper at amsterchem.com  Thu Feb 20 09:31:49 2014
From: jasper at amsterchem.com (jasper van baten)
Date: Thu, 20 Feb 2014 09:31:49 +0100
Subject: [Scilab-users] To find maximum value in a random curve
In-Reply-To: <1392805906969-4028741.post@n3.nabble.com>
References: <1392805906969-4028741.post@n3.nabble.com>
Message-ID: <5305BD75.8030801@amsterchem.com>

You could determine the coefficients of a cubic spline, then determine 
analytically the extrema and inflection points on the cubic equation 
that defines each interval (there where the roots of the parabolic that 
is the first order derivative of the cubic are within the interval).

See here for setting up the spline: 
http://en.wikipedia.org/wiki/Spline_interpolation

Best wishes,

Jasper.



On 2/19/2014 11:31, bomber1978 [via Scilab / Xcos - Mailing Lists 
Archives] wrote:
> Hi all,
>
> I have a random 2D-curve which is defined by a set of points (I don't 
> know the equation of the curve), obtained by interpolation.
> How can I find the maximum, minimum, & inflexion points on this curve.
>
> Thank you very much!
>
> ------------------------------------------------------------------------
> If you reply to this email, your message will be added to the 
> discussion below:
> http://mailinglists.scilab.org/To-find-maximum-value-in-a-random-curve-tp4028741.html 
>
> This email was sent by bomber1978 
> <http://mailinglists.scilab.org/template/NamlServlet.jtp?macro=user_nodes&user=496437> 
> (via Nabble)
> To receive all replies by email, subscribe to this discussion 
> <http://mailinglists.scilab.org/template/NamlServlet.jtp?macro=subscribe_by_code&node=4028741&code=dXNlcnNAbGlzdHMuc2NpbGFiLm9yZ3w0MDI4NzQxfC0xODEwOTc0OTQz>
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

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From grocer.toolbox at gmail.com  Thu Feb 20 09:08:42 2014
From: grocer.toolbox at gmail.com (Eric Dubois)
Date: Thu, 20 Feb 2014 09:08:42 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <1392816677490-4028742.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com> <53047A24.90004@laas.fr>
 <1392816677490-4028742.post@n3.nabble.com>
Message-ID: <CAGgDjFTxNiyXR5L3ACRK03Gi698kHpFgas1sTDj69=5yPYtq1w@mail.gmail.com>

Hello.

You could have ? look at the nls function in my toolbox Grocer, avaolable
undet Atoms ( see also my web page dubois.ensae.net/grocer.html).

?ric
Le 20 f?vr. 2014 08:32, "Yohann" <yohann.morille at univ-angers.fr> a ?crit :

> Hi Antoine,
> thank you for your answer but
> what I need is a confidence interval on each parameter !
> Cheers
> Yohann
>
>
>
>
> --
> View this message in context:
> http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028742.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive
> at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From stephane.mottelet at gmail.com  Thu Feb 20 09:43:46 2014
From: stephane.mottelet at gmail.com (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Thu, 20 Feb 2014 09:43:46 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <1392826257532-4028748.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <22361_1392822336_5304C840_22361_9512_1_8F1D40232A0E68409E3FC23A30C3266201690C8E195C@THSONEA01CMS04P.one.grp>
 <1392826257532-4028748.post@n3.nabble.com>
Message-ID: <CAB4PXHea4gnnm3yC_SdZ=SXvCT0Fdbv0H22Dqd0sYfY9MbXX4w@mail.gmail.com>

Hello,

If you can make the hypothesis that your data is corrupted by gaussian
noise, then you can approximate the covariance matrix of your estimated
parameters. Let p be the vector of parameters and r(p) the residual vector
given by

r(p)=sigma^(-1)*(y-Y(p))

where y is your measuement vector, Y(p) the "simulated" measurement, sigma
a diagonal matrix with the std error for each measurement. If we denote by

drdp(p) the derivative (or jacobian matrix) of r with respect to p then the
covariance matrice C of parameters can be estimated by


C=F^(-1)

where

F=drdp(p)' * drdp(p)

is the Fisher information matrix. The diagonal terms of V give you the
variance of the parameters. Of course, even in the gaussian case, this is a
crude approximation....

S.


2014-02-19 17:10 GMT+01:00 Yohann <yohann.morille at univ-angers.fr>:

> yes I know Denis, It was just an example to illustrate my question.
> My real dataset and function to fit are completely different and more
> complex.
> Thank you
>
>
>
> --
> View this message in context:
> http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028748.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive
> at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From antoine.monmayrant at laas.fr  Fri Feb 21 16:06:23 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Fri, 21 Feb 2014 16:06:23 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <53050C29.1000308@free.fr>
References: <1392732408401-4028696.post@n3.nabble.com>
 <5304DC87.4020507@gmail.com> <53050C29.1000308@free.fr>
Message-ID: <53076B6F.1070306@laas.fr>

On 02/19/2014 08:55 PM, Samuel Gougeon wrote:
> Le 19/02/2014 17:32, Claus Futtrup a ?crit :
>> Hi Yohan
>>
>> I see that I'm not alone wondering a bit about what you'd like to do.
>>
>> A mathematically solid and readily available technique to corner 
>> mathematical rounding errors and other errors of operation is called 
>> Interval Analysis.
>>
>> For matlab there's INTLAB. See:
>> http://www.ti3.tu-harburg.de/~rump/intlab/
>>
>> I'm sure it could be converted to Scilab without big trouble. Maybe I 
>> even have an old one laying around (??) somewhere ... maybe.
> Yes indeed, here : http://www-sop.inria.fr/coprin/logiciels/Int4Sci/

The thing is I don't see how to use these tools to do what Yoahn wants 
to do.
I think I have the same kind of issues than Yoahn (I've done a fit, how 
good is it as compare to another one, and what kind of "confidence" or 
"error bar" should I associate to each parameter).
Could you tell us how we can use interval analysis to adress this (just 
curious, it's a bit far from my field of expertise)?

Cheers,

Antoine







From reitertamas at gmail.com  Thu Feb 20 09:57:42 2014
From: reitertamas at gmail.com (=?ISO-8859-1?Q?Tam=E1s_Reiter?=)
Date: Thu, 20 Feb 2014 08:57:42 +0000
Subject: [Scilab-users] help, please
Message-ID: <CAG-O6HdNUHB5N-9TX_tz4re4KxG5O3a-ecytf3=dv55W3dkg=w@mail.gmail.com>

Hi all,

I would appreciate if anyone could suggest a solution for extracting the
content of a column vector to a pre-defined matrix size (identical row
numbers) within a for loop. I keep getting an error message:Submatrix
incorrecly defined...

my loop is as follows:



for j=1:numpcs do
t=X(:,1);//pick the score vector (first column of X)
t_pre=t-t;
        while norm(t-t_pre) > threshold do
        p=(X'*t)/norm(X'*t);//calculate and normalise the loading vector
        t_pre=t;//saving the original vector into  t_pre
        t=X*p;//calculating the new score vector (product of eigenvalue and
eigenvector)
        end
//extracting components explored
X=X-t*p';//calculating the residual matrix


*T(:,j)=t(:,:);--THIS IS WHERE I AM GETTING THIS ERRORP(:,j)=p(:,:);--THIS
IS WHERE I AM GETTING THIS ERROR*end
//T(:,j+1:numpcs)=[];
//P(:,j+1:numpcs)=[];
S=diag(T'*T);

Very much appriciate any help,

Kind regards,

Tamas
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From stephane.mottelet at gmail.com  Thu Feb 20 11:15:30 2014
From: stephane.mottelet at gmail.com (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Thu, 20 Feb 2014 11:15:30 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <1392816677490-4028742.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com> <53047A24.90004@laas.fr>
 <1392816677490-4028742.post@n3.nabble.com>
Message-ID: <CAB4PXHfuj4L6T-T6HrkGrkMm8LMz16Tage7YBzr6v3kc3DtVPA@mail.gmail.com>

Hello,

If you can make the hypothesis that your data is corrupted by gaussian
noise, then you can approximate the covariance matrix of your estimated
parameters. Let p be the vector of parameters and r(p) the residual vector
given by

r(p)=sigma^(-1)*(y-Y(p))

where y is your measuement vector, Y(p) the "simulated" measurement, sigma
a diagonal matrix with the std error for each measurement. If we denote by

drdp(p) the derivative (or jacobian matrix) of r with respect to p then the
covariance matrice C of parameters can be estimated by


C=F^(-1)

where

F=drdp(p)' * drdp(p)

is the Fisher information matrix. The diagonal terms of V give you the
variance of the parameters. Of course, even in the gaussian case, this is a
crude approximation.... Here is (attached) a simple example where the
derivative is approximated with the "derivative" macro of Scilab.



S.


2014-02-19 14:31 GMT+01:00 Yohann <yohann.morille at univ-angers.fr>:

> Hi Antoine,
> thank you for your answer but
> what I need is a confidence interval on each parameter !
> Cheers
> Yohann
>
>
>
>
> --
> View this message in context:
> http://mailinglists.scilab.org/evaluate-error-on-each-parameter-calculated-with-leastsq-tp4028696p4028742.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive
> at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From mariajovera at icloud.com  Fri Feb 21 06:18:14 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Thu, 20 Feb 2014 21:18:14 -0800 (PST)
Subject: [Scilab-users] finding similar values with scilab
Message-ID: <1392959894551-4028792.post@n3.nabble.com>

Hello!!! I have a big question !
I have a biiiiiiiiiiig data archive with text files with the form:

18.87 2.6 0.00545558
19.98 2.6 0.00225349
18.87 2.6 0.00405905
13.32 2.6 0.01338288
19.98 2.6 0.01537532
18.87 2.6 0.00481375
19.98 2.6 0.00936207
12.21 2.6 0.00558517

I need  eliminate extreme values, for example: If I plot a random text file
I obtain a image like this:

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21_a_la%28s%29_2.07.54.png> 

As you can see theres points extremes. If i make a zoom 

DN=find(DM(:,3)<=0.0001 & DM(:,3)>=0.00002 )
dn=DM(DN,:)
figure(2)
plot(dn(:,1),dn(:,3),'O')

I have this picture

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21_a_la%28s%29_2.10.56.png> 


My question is: Has scilab a command that can help me to find the "dense
data" , I mean find all the values that are similar. I ask this cause I have
about 20,000 text files and is imposible for me make "artesal zoms".

Please any suggestion, answer going to help me. 




--
View this message in context: http://mailinglists.scilab.org/finding-similar-values-with-scilab-tp4028792.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From romain.desbats at ifsttar.fr  Thu Feb 20 11:21:52 2014
From: romain.desbats at ifsttar.fr (R0M1)
Date: Thu, 20 Feb 2014 02:21:52 -0800 (PST)
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <6a0f175ed0d6c0c5408403abfefaa077@scilab-enterprises.com>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
 <6a0f175ed0d6c0c5408403abfefaa077@scilab-enterprises.com>
Message-ID: <1392891712865-4028769.post@n3.nabble.com>

Hi Paul,

Thanks a lot for your answer!!

Actually, changing "xcos_simulate(scs_m,4)" to "cpr=xcos_simulate(scs_m,4)"
gave me the error "Probl?me avec la pile" ("Problem with the stack" in
English I assume). But this was maybe due to the initial parameters of
timestep / en time in the diagram.

But anyway, using the context to change the parameters is much easier and it
works perfectly!! Exactly as in the example of the help page you mentioned.


Thanks again for this.

Regards,

Romain



--
View this message in context: http://mailinglists.scilab.org/Scilab-users-Problem-running-xcos-in-batch-mode-from-Scilab-tp4028765p4028769.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From matiashs at hotmail.com  Fri Feb 21 10:04:35 2014
From: matiashs at hotmail.com (matacosta)
Date: Fri, 21 Feb 2014 01:04:35 -0800 (PST)
Subject: [Scilab-users] Complex text file problem getting matrices from it
Message-ID: <1392973475489-4028793.post@n3.nabble.com>

Dear All,

I need to obtain two matrices from a text file. Normally this should not be
a problem with fscanfMat but because I have headings in the middle of the
file this function does not work.

I though up to now in two solutions. 

One is using mgetl and obtain the part where the first numbers are and then
the second (I have a problem with this since I am not sure if mgetl is able
to start getting the data from a certain line on or only beginning).
Therefore, I got properly the first half (which normally the fscanfMat
analysis properly) but the fscanfMat does not recognize the 3 columns, only
1 when I save with write. Is something of formatting but I do not get why
(related to tab and space, I checked manually).

The other to read the whole part of interested as 1 string with mgetstr.
Then separate this string with strsplit which I am having problems with the
matched_separators vector. Then I would transform that matrix of strings
into double. This would allow me to get both matrices but again i would have
the same problem of writing function.

Any help? better way of doing it? 


A simplified version of the data is down:

"BW: 4"
"SWEEP AVERAGING: OFF"
"POINT AVERAGING: OFF"


"TRACE: A"
"FORMAT: LINEAR"

"Frequency"	"Data Trace Real"	"Data Trace Imag"
1.00000000000e+03	1.883005e-11	0.000000e+00
1.00000000000e+03	1.876519e-11	0.000000e+00
1.00000000000e+03	1.880004e-11	0.000000e+00

"TRACE: B"
"FORMAT: LINEAR"

"Frequency"	"Data Trace Real"	"Data Trace Imag"
1.00000000000e+03	1.906406e-02	0.000000e+00
1.00000000000e+03	1.790656e-02	0.000000e+00
1.00000000000e+03	1.664777e-02	0.000000e+00
1.00000000000e+03	1.774269e-02	0.000000e+00


Thanks a lot!!



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From Mike at Page-One.Waitrose.com  Fri Feb 21 18:28:39 2014
From: Mike at Page-One.Waitrose.com (Mike Page)
Date: Fri, 21 Feb 2014 17:28:39 -0000
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <1392959894551-4028792.post@n3.nabble.com>
Message-ID: <ODEPIKBHDAGHIMKOPEMEGELDCOAA.Mike@Page-One.Waitrose.com>

Hi,

If you want to remove outliers from a data set, you can use the modified
Thompson Tau method.  Basically tau provides a limit based on mean and
standard deviation so that values outside (mean +/- n * std dev) are
rejected.  The method is unfortunately iterative, but it works well.  You
can remove the located outliers using something like x = x(find(delta < tau
* sd)), where delta is the absolute difference from the mean.

Hope that helps,
Mike.


-----Original Message-----
From: users [mailto:users-bounces at lists.scilab.org]On Behalf Of
samaelkreutz
Sent: 21 February 2014 05:18
To: users at lists.scilab.org
Subject: [Scilab-users] finding similar values with scilab


Hello!!! I have a big question !
I have a biiiiiiiiiiig data archive with text files with the form:

18.87 2.6 0.00545558
19.98 2.6 0.00225349
18.87 2.6 0.00405905
13.32 2.6 0.01338288
19.98 2.6 0.01537532
18.87 2.6 0.00481375
19.98 2.6 0.00936207
12.21 2.6 0.00558517

I need  eliminate extreme values, for example: If I plot a random text file
I obtain a image like this:

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21
_a_la%28s%29_2.07.54.png>

As you can see theres points extremes. If i make a zoom

DN=find(DM(:,3)<=0.0001 & DM(:,3)>=0.00002 )
dn=DM(DN,:)
figure(2)
plot(dn(:,1),dn(:,3),'O')

I have this picture

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21
_a_la%28s%29_2.10.56.png>


My question is: Has scilab a command that can help me to find the "dense
data" , I mean find all the values that are similar. I ask this cause I have
about 20,000 text files and is imposible for me make "artesal zoms".

Please any suggestion, answer going to help me.




--
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http://mailinglists.scilab.org/finding-similar-values-with-scilab-tp4028792.
html
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Nabble.com.
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From stephane.mottelet at gmail.com  Fri Feb 21 19:22:45 2014
From: stephane.mottelet at gmail.com (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Fri, 21 Feb 2014 19:22:45 +0100
Subject: [Scilab-users] Test
Message-ID: <53079975.3080307@gmail.com>

This is just a test, sorry for the disturbance.

S.


From chuox.bece at gmail.com  Fri Feb 21 19:31:36 2014
From: chuox.bece at gmail.com (Chuox)
Date: Fri, 21 Feb 2014 10:31:36 -0800 (PST)
Subject: [Scilab-users] Linking DLL from MS Visual C++ to SciLab.
In-Reply-To: <OF81BA601D.62094241-ON80257C86.003B2464-80257C86.003C76A0@prox.com>
References: <OF81BA601D.62094241-ON80257C86.003B2464-80257C86.003C76A0@prox.com>
Message-ID: <1393007496941-4028813.post@n3.nabble.com>

Using a third-party DLL in SciLab might be tricky.
I had a problem linking EPANET toolkit library, what i did was create a dll
to call the epanet2.dll (the library form EPANET) and return the values in
SciLab. Maybe is not the best solution and there is a better way, but i
didn't find it.
This is and example of how i did it:

/////The C code/////
#include <string.h>
#include "epanet2.h"
int SetLinkValue(int *index, int *param, float *Val, int *errcode )
{
*errcode=ENsetlinkvalue(*index, *param, *Val);
return (*errcode);
}

/////SciLab Code/////
//Link the dll used to cal the external dll
unSetLink=link(Ubicacion+"enlace.dll","SetLinkValue","c");

//This return and error
[err]=call("SetLinkValue",TubIndex,1,"i",0,2,"i",diametro,3,"r","out",[1,1],4,"i");



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From stephane.mottelet at gmail.com  Fri Feb 21 19:34:04 2014
From: stephane.mottelet at gmail.com (=?ISO-8859-1?Q?St=E9phane_Mottelet?=)
Date: Fri, 21 Feb 2014 19:34:04 +0100
Subject: [Scilab-users] Test
Message-ID: <CAB4PXHdwa+J6oY1q7ugbAgYYmLwdh2F0uUwm=Z2zS=1igHX+sQ@mail.gmail.com>

This a test, sorry.

S.
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From ian.h.bell at gmail.com  Fri Feb 21 19:39:24 2014
From: ian.h.bell at gmail.com (Ian Bell)
Date: Fri, 21 Feb 2014 19:39:24 +0100
Subject: [Scilab-users] Linking DLL from MS Visual C++ to SciLab.
In-Reply-To: <1393007496941-4028813.post@n3.nabble.com>
References: <OF81BA601D.62094241-ON80257C86.003B2464-80257C86.003C76A0@prox.com>
 <1393007496941-4028813.post@n3.nabble.com>
Message-ID: <CAJQnXJeJPJ+Y8BtUKGEn0hP7F8rJL-59pc8BA7SZc7ESPew2CA@mail.gmail.com>

Yes, using third-party DLL with scilab does seem to be hard.

Two crucial things are not supported:

 - All inputs to the function are passed by *reference*, not value, but
often times DLL are build with inputs being passed by value
- Functions can not return a value.

IMHO these are very serious problems with the DLL integration.  I couldn't
use my DLL in scilab because of these issues.  And the documentation on
this topic is quite weak.  Especially the always passing by reference
part.  That took me a few hours of debugging to realize that.

Ian


On Fri, Feb 21, 2014 at 7:31 PM, Chuox <chuox.bece at gmail.com> wrote:

> Using a third-party DLL in SciLab might be tricky.
> I had a problem linking EPANET toolkit library, what i did was create a dll
> to call the epanet2.dll (the library form EPANET) and return the values in
> SciLab. Maybe is not the best solution and there is a better way, but i
> didn't find it.
> This is and example of how i did it:
>
> /////The C code/////
> #include <string.h>
> #include "epanet2.h"
> int SetLinkValue(int *index, int *param, float *Val, int *errcode )
> {
> *errcode=ENsetlinkvalue(*index, *param, *Val);
> return (*errcode);
> }
>
> /////SciLab Code/////
> //Link the dll used to cal the external dll
> unSetLink=link(Ubicacion+"enlace.dll","SetLinkValue","c");
>
> //This return and error
>
> [err]=call("SetLinkValue",TubIndex,1,"i",0,2,"i",diametro,3,"r","out",[1,1],4,"i");
>
>
>
> --
> View this message in context:
> http://mailinglists.scilab.org/Scilab-users-Linking-DLL-from-MS-Visual-C-to-SciLab-tp4028800p4028813.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive
> at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>
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From cfuttrup at gmail.com  Fri Feb 21 20:50:30 2014
From: cfuttrup at gmail.com (Claus Futtrup)
Date: Fri, 21 Feb 2014 20:50:30 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <53076B6F.1070306@laas.fr>
References: <1392732408401-4028696.post@n3.nabble.com>
 <5304DC87.4020507@gmail.com> <53050C29.1000308@free.fr>
 <53076B6F.1070306@laas.fr>
Message-ID: <5307AE06.5090002@gmail.com>

Hi Antoine

Initial message from Yohan was not sufficient to determine whether 
Interval Analysis could do it or not.

As I said in my previous answer - IntLab is for determining mathematical 
rounding errors and other errors of operation ... for example if you 
make almost division-by-zero, then you have a big gap of potentially 
correct solutions. This is what IntLab is for, robust mathematics, not 
curve fitting or analyzing measurement data.

Best regards,
Claus

On 2/21/2014 16:06, Antoine Monmayrant wrote:
> On 02/19/2014 08:55 PM, Samuel Gougeon wrote:
>> Le 19/02/2014 17:32, Claus Futtrup a ?crit :
>>> Hi Yohan
>>>
>>> I see that I'm not alone wondering a bit about what you'd like to do.
>>>
>>> A mathematically solid and readily available technique to corner 
>>> mathematical rounding errors and other errors of operation is called 
>>> Interval Analysis.
>>>
>>> For matlab there's INTLAB. See:
>>> http://www.ti3.tu-harburg.de/~rump/intlab/
>>>
>>> I'm sure it could be converted to Scilab without big trouble. Maybe 
>>> I even have an old one laying around (??) somewhere ... maybe.
>> Yes indeed, here : http://www-sop.inria.fr/coprin/logiciels/Int4Sci/
>
> The thing is I don't see how to use these tools to do what Yoahn wants 
> to do.
> I think I have the same kind of issues than Yoahn (I've done a fit, 
> how good is it as compare to another one, and what kind of 
> "confidence" or "error bar" should I associate to each parameter).
> Could you tell us how we can use interval analysis to adress this 
> (just curious, it's a bit far from my field of expertise)?
>
> Cheers,
>
> Antoine
>
>
>
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
> .
>


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From sgougeon at free.fr  Fri Feb 21 21:28:23 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Fri, 21 Feb 2014 21:28:23 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <53076B6F.1070306@laas.fr>
References: <1392732408401-4028696.post@n3.nabble.com>
 <5304DC87.4020507@gmail.com> <53050C29.1000308@free.fr>
 <53076B6F.1070306@laas.fr>
Message-ID: <5307B6E7.1010103@free.fr>

Le 21/02/2014 16:06, Antoine Monmayrant a ?crit :
> On 02/19/2014 08:55 PM, Samuel Gougeon wrote:
>> Le 19/02/2014 17:32, Claus Futtrup a ?crit :
>>> Hi Yohan
>>>
>>> I see that I'm not alone wondering a bit about what you'd like to do.
>>>
>>> A mathematically solid and readily available technique to corner 
>>> mathematical rounding errors and other errors of operation is called 
>>> Interval Analysis.
>>>
>>> For matlab there's INTLAB. See:
>>> http://www.ti3.tu-harburg.de/~rump/intlab/
>>>
>>> I'm sure it could be converted to Scilab without big trouble. Maybe 
>>> I even have an old one laying around (??) somewhere ... maybe.
>> Yes indeed, here : http://www-sop.inria.fr/coprin/logiciels/Int4Sci/
>
> The thing is I don't see how to use these tools to do what Yoahn wants 
> to do.
Neither do i. I just got the opportunity to say that it would be nice to 
have this external toolbox in ATOMS...

Samuel


From sgougeon at free.fr  Fri Feb 21 21:46:07 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Fri, 21 Feb 2014 21:46:07 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <1392816677490-4028742.post@n3.nabble.com>
References: <1392732408401-4028696.post@n3.nabble.com>
 <53047A24.90004@laas.fr> <1392816677490-4028742.post@n3.nabble.com>
Message-ID: <5307BB0F.3030100@free.fr>

Le 19/02/2014 14:31, Yohann a ?crit :
> Hi Antoine,
> thank you for your answer but
> what I need is a confidence interval on each parameter !
A raw empirical approach:
Let R be the RMS residue for the best set P of fitting parameters.
* change the value of P(1) by -- say -- +1%, for the parameter #1.
* calculate the new residue R1p, and the change dR1p = abs(R-R1p)
    you may symmetrize the process : change P(1) => P(1)*0.99 (-1%)
    calculate R1m with this biased fitting model, and get dR1=dR1m+dR1p
* These dR somewhat represent sensitivities of the fit w.r.t. to each 
parameter.
* Assume that the confidence interval for parameter # is proportional to 
1/dR#

For "stiff" parameters, dR# will be big (easily divergent), and 1/dR# small.

DISCLAIMER : You may use this approach under your own responsability ;)
Its main (may be unique) merit is to be simple.

Samuel


From sgougeon at free.fr  Fri Feb 21 21:51:25 2014
From: sgougeon at free.fr (Samuel Gougeon)
Date: Fri, 21 Feb 2014 21:51:25 +0100
Subject: [Scilab-users] evaluate error on each parameter calculated with
 leastsq
In-Reply-To: <5307BB0F.3030100@free.fr>
References: <1392732408401-4028696.post@n3.nabble.com>
 <53047A24.90004@laas.fr> <1392816677490-4028742.post@n3.nabble.com>
 <5307BB0F.3030100@free.fr>
Message-ID: <5307BC4D.9030201@free.fr>

This makes me also thinking about /Design Of Experiment/.
You may get useful ressources about DOE through the module 
http://atoms.scilab.org/toolboxes/scidoe

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From paul.carrico at free.fr  Fri Feb 21 22:36:54 2014
From: paul.carrico at free.fr (Paul CARRICO)
Date: Fri, 21 Feb 2014 22:36:54 +0100
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <1392959894551-4028792.post@n3.nabble.com>
References: <1392959894551-4028792.post@n3.nabble.com>
Message-ID: <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>

Did you have a look to "awk" and "sed" tools that can be used in conjunction
with Scilab ?



-----Message d'origine-----
De?: users [mailto:users-bounces at lists.scilab.org] De la part de
samaelkreutz
Envoy??: vendredi 21 f?vrier 2014 06:18
??: users at lists.scilab.org
Objet?: [Scilab-users] finding similar values with scilab

Hello!!! I have a big question !
I have a biiiiiiiiiiig data archive with text files with the form:

18.87 2.6 0.00545558
19.98 2.6 0.00225349
18.87 2.6 0.00405905
13.32 2.6 0.01338288
19.98 2.6 0.01537532
18.87 2.6 0.00481375
19.98 2.6 0.00936207
12.21 2.6 0.00558517

I need  eliminate extreme values, for example: If I plot a random text file
I obtain a image like this:

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21
_a_la%28s%29_2.07.54.png> 

As you can see theres points extremes. If i make a zoom 

DN=find(DM(:,3)<=0.0001 & DM(:,3)>=0.00002 )
dn=DM(DN,:)
figure(2)
plot(dn(:,1),dn(:,3),'O')

I have this picture

<http://mailinglists.scilab.org/file/n4028792/Captura_de_pantalla_2014-02-21
_a_la%28s%29_2.10.56.png> 


My question is: Has scilab a command that can help me to find the "dense
data" , I mean find all the values that are similar. I ask this cause I have
about 20,000 text files and is imposible for me make "artesal zoms".

Please any suggestion, answer going to help me. 




--
View this message in context:
http://mailinglists.scilab.org/finding-similar-values-with-scilab-tp4028792.
html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at
Nabble.com.
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users at lists.scilab.org
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From Christophe.Dang at sidel.com  Thu Feb 20 09:47:48 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Thu, 20 Feb 2014 09:47:48 +0100
Subject: [Scilab-users] To find maximum value in a random curve
In-Reply-To: <1392805906969-4028741.post@n3.nabble.com>
References: <1392805906969-4028741.post@n3.nabble.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F3267F1160@301EX00100.sidel.com>

Hello, 

> De la part de bomber1978
> Envoy? : mercredi 19 f?vrier 2014 11:32
>
> I have a random 2D-curve which is defined by a set of points
> (I don't know the equation of the curve) [...]
> How can I find the maximum, minimum, & inflexion points on this curve.

This is more a methodology problem than a Scilab problem.

You don't have a model to fit your data, so you have two solutions:

perform a non-parametric analysis, e.g.
the min() and max() functions give you the extrema of the values you have, but you don't have things like inflection point.

smooth the data, extract the second derivative
and detect when it goes through 0.
You can look at the Savitzky-Golay algorithm,
which gives the derivatives.

You have an example of its implementation here when the points are evenly spaced :

http://commons.wikimedia.org/wiki/File:Savitzky-golay_pic_gaussien_bruite.svg

If the point sare not evenly spaced, you then have to perform a polynomial regression on a sliding interval "manually".

Hope this helps.

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
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From mariajovera at icloud.com  Sat Feb 22 00:25:59 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Fri, 21 Feb 2014 15:25:59 -0800 (PST)
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
Message-ID: <1393025159051-4028865.post@n3.nabble.com>

I need compute an iteration , but (obviously I don't know how to do it  =/  )
Read thousand of text files... then what I do is check the mean, stand.
deviation, and variation coefficient ( std/mean ). If the variation
coefficient is <= 0.4, stop the process. If not, eliminate the big value and
recalculate all the process again.

But i'm lost!!! because Im reading multiple text files and is confusing!!!!! 
Heeelp!!!!  




clc
clear all
z=[]; // genero mi matriz vacia que se ira llenando con el for
 for i=103 //35:2:37// 
     for j=2.6:0.1:3.9//
     DM = fscanfMat(msprintf("new-C1_%d_%3.1f.txt",i,j));
     //disp(i,j)
     med=mean(DM(:,3));
     std=st_deviation(DM(:,3));
     CV=std/abs(med);
     Z=[med std CV CV*100];
     z=[z;Z]; // Matriz con informaci?n requerida
     //figure(i);
     //plot(DM(:,1), DM(:,3), 'ro*') 
     end
 end 
z




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From paul.carrico at free.fr  Sat Feb 22 08:48:28 2014
From: paul.carrico at free.fr (Paul CARRICO)
Date: Sat, 22 Feb 2014 08:48:28 +0100
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <1393025159051-4028865.post@n3.nabble.com>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
 <1393025159051-4028865.post@n3.nabble.com>
Message-ID: <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>

Do you have to do this on a single file and to repeat it X times (where X is the thousands of file you're speaking) or do you have to calculate the deviation and so on) on the X files at the same time ?

Obviously the first case is much easier than the second one .....



-----Message d'origine-----
De : users [mailto:users-bounces at lists.scilab.org] De la part de samaelkreutz
Envoy? : samedi 22 f?vrier 2014 00:26
? : users at lists.scilab.org
Objet : Re: [Scilab-users] finding similar values with scilab

I need compute an iteration , but (obviously I don't know how to do it  =/  ) Read thousand of text files... then what I do is check the mean, stand.
deviation, and variation coefficient ( std/mean ). If the variation coefficient is <= 0.4, stop the process. If not, eliminate the big value and recalculate all the process again.

But i'm lost!!! because Im reading multiple text files and is confusing!!!!! 
Heeelp!!!!  




clc
clear all
z=[]; // genero mi matriz vacia que se ira llenando con el for  for i=103 //35:2:37// 
     for j=2.6:0.1:3.9//
     DM = fscanfMat(msprintf("new-C1_%d_%3.1f.txt",i,j));
     //disp(i,j)
     med=mean(DM(:,3));
     std=st_deviation(DM(:,3));
     CV=std/abs(med);
     Z=[med std CV CV*100];
     z=[z;Z]; // Matriz con informaci?n requerida
     //figure(i);
     //plot(DM(:,1), DM(:,3), 'ro*') 
     end
 end
z




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From paul.carrico at free.fr  Sat Feb 22 09:04:28 2014
From: paul.carrico at free.fr (Paul CARRICO)
Date: Sat, 22 Feb 2014 09:04:28 +0100
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
 <1393025159051-4028865.post@n3.nabble.com>
 <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>
Message-ID: <000001cf2fa4$b690aaf0$23b200d0$@carrico@free.fr>

I've ever suggested to use "awk" / "sed" and other linux tool (even under Windows) in conjunction to Scilab ;

1rst step : concatenate all the files if necessary (with Scilab for example)

Average :
http://azimuth.biz/2009/03/30/calculate-average-using-awk/

standard deviation :
http://azimuth.biz/2010/02/25/calculate-standard-deviation-using-awk/


Min-Max:
http://azimuth.biz/2010/10/20/find-minimum-and-maximum-using-awk/


supress values greater than : (ditto for min value)
http://www.unix.com/shell-programming-scripting/178904-awk-show-lines-where-nth-column-greater-than-some-number.html
http://oreilly.com/catalog/unixnut3/chapter/ch11.html


and so on

I'm not a awk/sed specialist, but I've a look to such tools when my input files have million's of lines ... and it works fine and fast !!!
Just an idea


NB: tutos
http://www.grymoire.com/Unix/Awk.html
http://www.cs.unibo.it/~renzo/doc/awk/nawkA4.pdf
etc. ...




-----Message d'origine-----
De : users [mailto:users-bounces at lists.scilab.org] De la part de Paul CARRICO
Envoy? : samedi 22 f?vrier 2014 08:48
? : 'International users mailing list for Scilab.'
Objet : Re: [Scilab-users] finding similar values with scilab

Do you have to do this on a single file and to repeat it X times (where X is the thousands of file you're speaking) or do you have to calculate the deviation and so on) on the X files at the same time ?

Obviously the first case is much easier than the second one .....



-----Message d'origine-----
De : users [mailto:users-bounces at lists.scilab.org] De la part de samaelkreutz Envoy? : samedi 22 f?vrier 2014 00:26 ? : users at lists.scilab.org Objet : Re: [Scilab-users] finding similar values with scilab

I need compute an iteration , but (obviously I don't know how to do it  =/  ) Read thousand of text files... then what I do is check the mean, stand.
deviation, and variation coefficient ( std/mean ). If the variation coefficient is <= 0.4, stop the process. If not, eliminate the big value and recalculate all the process again.

But i'm lost!!! because Im reading multiple text files and is confusing!!!!! 
Heeelp!!!!  




clc
clear all
z=[]; // genero mi matriz vacia que se ira llenando con el for  for i=103 //35:2:37// 
     for j=2.6:0.1:3.9//
     DM = fscanfMat(msprintf("new-C1_%d_%3.1f.txt",i,j));
     //disp(i,j)
     med=mean(DM(:,3));
     std=st_deviation(DM(:,3));
     CV=std/abs(med);
     Z=[med std CV CV*100];
     z=[z;Z]; // Matriz con informaci?n requerida
     //figure(i);
     //plot(DM(:,1), DM(:,3), 'ro*') 
     end
 end
z




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From mariajovera at icloud.com  Sat Feb 22 15:01:07 2014
From: mariajovera at icloud.com (samaelkreutz)
Date: Sat, 22 Feb 2014 06:01:07 -0800 (PST)
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <000001cf2fa4$b690aaf0$23b200d0$@carrico@free.fr>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
 <1393025159051-4028865.post@n3.nabble.com>
 <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>
 <000001cf2fa4$b690aaf0$23b200d0$@carrico@free.fr>
Message-ID: <1393077667016-4028875.post@n3.nabble.com>

Is the second option...
with a for cycle im calling the files... I have about 2,000 files each one
with hundred of lines. And yep... I manipulate the files with awk, at the
beginning I was programming with bash the process becomes slow and two...
(it takes about half hour, ok is not so much... but for me it is). And
second...  I need eliminate the outliers, because if a take a random file
and compute the mean and std, the mean is so sensitive to extreme values and
sometimes those values aren representative. I have to eliminate them and
recalculate the process again without that outlier and test again... is
coefficient std/mean less that 0.4 ?? if not, find again other outlier,
eliminate and repeat the process again and so on until the coefficient  is
0.4 or less. Save the information required (mean, std, coefficient,) into
matrix and then take the following text file repeat the process before and
save the results in the matrix. At the end of the process I pretend obtain a
representative matrix with the information of all my text files.   

As a user posted here, I think the modified Thompson Tau method sounds
great... I think I'm going to try this... seriously I never though that
statistics were useful  until my thesis obviously...     =/ 



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From yohann.morille at univ-angers.fr  Fri Feb 21 10:35:30 2014
From: yohann.morille at univ-angers.fr (Yohann)
Date: Fri, 21 Feb 2014 01:35:30 -0800 (PST)
Subject: [Scilab-users] evaluate error on each parameter calculated with
	leastsq
In-Reply-To: <53047A24.90004@laas.fr>
References: <1392732408401-4028696.post@n3.nabble.com> <53047A24.90004@laas.fr>
Message-ID: <1392975330818-4028795.post@n3.nabble.com>

Contrary to what I understood at the first reading of Antoine's respons and
what can do Bootstrapping, it seems
that this method is well suited to do the job.

http://en.wikipedia.org/wiki/Bootstrapping_%28statistics%29#Resampling_residuals

If I have well understood this link, after applying this algorithm you
obtain a large number of occurrences (Nboot) of each one of your parameter
(C1 C2 and C3 in my case)
and then you can determine a value and a confidence interval:
C1 = mean(C1boot)+/- std(C1boot)*1.95996
C2 = mean(C2boot)+/- std(C2boot)*1.95996
C3 = mean(C3boot)+/- std(C3boot)*1.95996

I think 1.95996 is for a confidence interval of 97.5% (from Student law),
but not sure...

If it is good, it looks easy to implement and understand.





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From aweeks at hidglobal.com  Mon Feb 24 08:58:23 2014
From: aweeks at hidglobal.com (aweeks at hidglobal.com)
Date: Mon, 24 Feb 2014 07:58:23 +0000
Subject: [Scilab-users] Linking DLL from MS Visual C++ to SciLab.
In-Reply-To: <1393007496941-4028813.post@n3.nabble.com>
References: <OF81BA601D.62094241-ON80257C86.003B2464-80257C86.003C76A0@prox.com>
 <1393007496941-4028813.post@n3.nabble.com>
Message-ID: <OFEFE0BC7F.29A533DD-ON80257C89.002BAD22-80257C89.002BCA35@prox.com>

Thanks Chuox,

I'll try that  and see what happens.
                                          
 Adrian Weeks                             
 Development Engineer                     
                                          
                                          
 HID Global,                              
 3 Cae Gwyrdd,                            
 Green Meadow Springs                     
 Business Park,                           
 Cardiff CF15 7AB,                        
 United Kingdom.                          
 +44 (0)29 20528523                       
 (Office)                                 
 aweeks at hidglobal.com                     
 www.hidglobal.com                        
                                          

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From Christophe.Dang at sidel.com  Mon Feb 24 10:36:16 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Mon, 24 Feb 2014 10:36:16 +0100
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <1393077667016-4028875.post@n3.nabble.com>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
 <1393025159051-4028865.post@n3.nabble.com>
 <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>
 <000001cf2fa4$b690aaf0$23b200d0$@carrico@free.fr>
 <1393077667016-4028875.post@n3.nabble.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F32689F5CB@301EX00100.sidel.com>

Hello, 

> De la part de samaelkreutz
> Envoy? : samedi 22 f?vrier 2014 15:01
>
> I need eliminate the outliers, because if a take a random file and
> compute the mean and std, the mean is so sensitive to extreme values 
> and sometimes those values aren representative.

Another approach is to use another position criterion that is less
sensitive to outliers, e.g. the median.

Best regards.

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer

______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From Christophe.Dang at sidel.com  Mon Feb 24 10:46:01 2014
From: Christophe.Dang at sidel.com (Dang, Christophe)
Date: Mon, 24 Feb 2014 10:46:01 +0100
Subject: [Scilab-users] help, please
In-Reply-To: <CAG-O6HdNUHB5N-9TX_tz4re4KxG5O3a-ecytf3=dv55W3dkg=w@mail.gmail.com>
References: <CAG-O6HdNUHB5N-9TX_tz4re4KxG5O3a-ecytf3=dv55W3dkg=w@mail.gmail.com>
Message-ID: <3B5FFC67498DFF49AE7271A584867D16F32689F60D@301EX00100.sidel.com>

Hello, 

> De la part de Tam?s Reiter
> Envoy? : jeudi 20 f?vrier 2014 09:58
>
> I keep getting an error message:Submatrix incorrecly defined...
> [...]
> T(:,j)=t(:,:);--THIS IS WHERE I AM GETTING THIS ERROR
> P(:,j)=p(:,:);--THIS IS WHERE I AM GETTING THIS ERROR

I'm not sure about what you try to do
(I couldn't run your code because we don't have all the values),
but the overall syntax is correct:

A = [1 1 ; 1 1]
b = |2 ; 2]
A(:, 1) = b(:, :)

works well. Mind that t(:, :) is the same as t,
so you can simplify your syntax.

Now, t must be a column vector.
Can you check it is before the assignment?

Hope this helps

-- 
Christophe Dang Ngoc Chan
Mechanical calculation engineer






______________________________________________________________________

This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error), please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
______________________________________________________________________


From cfuttrup at gmail.com  Mon Feb 24 11:52:14 2014
From: cfuttrup at gmail.com (Claus Futtrup)
Date: Mon, 24 Feb 2014 11:52:14 +0100
Subject: [Scilab-users] finding similar values with scilab
In-Reply-To: <3B5FFC67498DFF49AE7271A584867D16F32689F5CB@301EX00100.sidel.com>
References: <1392959894551-4028792.post@n3.nabble.com>
 <001801cf2f4d$0b2eafb0$218c0f10$@carrico@free.fr>
 <1393025159051-4028865.post@n3.nabble.com>
 <000301cf2fa2$7a713280$6f539780$@carrico@free.fr>
 <000001cf2fa4$b690aaf0$23b200d0$@carrico@free.fr>
 <1393077667016-4028875.post@n3.nabble.com>
 <3B5FFC67498DFF49AE7271A584867D16F32689F5CB@301EX00100.sidel.com>
Message-ID: <530B245E.20401@gmail.com>

On 2/24/2014 10:36, Dang, Christophe wrote:
> Hello,
>
>> De la part de samaelkreutz
>> Envoy? : samedi 22 f?vrier 2014 15:01
>>
>> I need eliminate the outliers, because if a take a random file and
>> compute the mean and std, the mean is so sensitive to extreme values
>> and sometimes those values aren representative.
> Another approach is to use another position criterion that is less
> sensitive to outliers, e.g. the median.
>
> Best regards.
>

I agree with Christophe ... it sounds like you should take a look at 
median filtering.

/Claus

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From W.Schulz at ove.at  Tue Feb 25 12:55:51 2014
From: W.Schulz at ove.at (SCHULZ Wolfgang)
Date: Tue, 25 Feb 2014 11:55:51 +0000
Subject: [Scilab-users] Plotting density values
Message-ID: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>

Hello,
I'm asking for an intelligent method to solve the following problem without a for loop.

I have 2 vectors x an y with e.g. 3000 values. The range of x values is between 0 and 360 and the range of y values is between -15 and 15.
I would like to plot the density of individual grid cells for e.g. dx=10, dy=1 and therefore I would need a matrix with 36x30 values where each value corresponds to the number of data points in the cell.

Any idea who I can do that without a for loop?

Thanks a lot
Wolfgang


From paul.bignier at scilab-enterprises.com  Tue Feb 25 13:54:17 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Tue, 25 Feb 2014 13:54:17 +0100
Subject: [Scilab-users] Plotting density values
In-Reply-To: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
References: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
Message-ID: <530C9279.2010206@scilab-enterprises.com>


Hi,

It sounds to me like you are trying to use histplot 
<https://help.scilab.org/docs/5.4.1/en_US/histplot.html>(y,x)?

Regards,
Paul


On 02/25/2014 12:55 PM, SCHULZ Wolfgang wrote:
> Hello,
> I'm asking for an intelligent method to solve the following problem without a for loop.
>
> I have 2 vectors x an y with e.g. 3000 values. The range of x values is between 0 and 360 and the range of y values is between -15 and 15.
> I would like to plot the density of individual grid cells for e.g. dx=10, dy=1 and therefore I would need a matrix with 36x30 values where each value corresponds to the number of data points in the cell.
>
> Any idea who I can do that without a for loop?
>
> Thanks a lot
> Wolfgang
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Development engineer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From Serge.Steer at inria.fr  Tue Feb 25 15:57:20 2014
From: Serge.Steer at inria.fr (Serge Steer)
Date: Tue, 25 Feb 2014 15:57:20 +0100
Subject: [Scilab-users] Plotting density values
In-Reply-To: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
References: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
Message-ID: <530CAF50.50001@inria.fr>

The following function does the job but with one loop. It is based on 
the 1D classification function dsearch
Serg Steer


function occ=dsearch2D(xy,dx,dy,opt)
//x,y coordinates of the points of the cloud
//dx, discretization of the x axis
//dy , discretization of the y axis
//occ, table such as occ(i,j) contains the number of points in the
//"pixel" [dx(i) dx(i+1)) x [dy(j) dy(j+1))
   if argn(2)<4 then opt='c';end
   if and(opt<>["c","d"]) then
     error(msprintf(_("%: unknown char specifier (must be ''c'' or 
''d'')\n"),"dsearch2D"))
   end
   if size(xy,2)<>2 then
     error("Wrong dimension for first argument")
   end
   [indx,occx]=dsearch(xy(:,1),dx,opt);
   occ=[];
   dy=matrix(dy,1,-1);
   for k=1:length(dx)-1
     i=find(indx==k);
     [indy,occy]=dsearch(xy(i,2),dy,opt);
     occ=[occ; occy];
   end
endfunction




Le 25/02/2014 12:55, SCHULZ Wolfgang a ?crit :
> Hello,
> I'm asking for an intelligent method to solve the following problem without a for loop.
>
> I have 2 vectors x an y with e.g. 3000 values. The range of x values is between 0 and 360 and the range of y values is between -15 and 15.
> I would like to plot the density of individual grid cells for e.g. dx=10, dy=1 and therefore I would need a matrix with 36x30 values where each value corresponds to the number of data points in the cell.
>
> Any idea who I can do that without a for loop?
>
> Thanks a lot
> Wolfgang
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>



From romain.desbats at ifsttar.fr  Tue Feb 25 16:15:09 2014
From: romain.desbats at ifsttar.fr (Romain Desbats)
Date: Tue, 25 Feb 2014 16:15:09 +0100 (CET)
Subject: [Scilab-users] Increment of parameters in optim function
In-Reply-To: <1984960779.3708825.1393340406433.JavaMail.root@ifsttar.fr>
Message-ID: <879307472.3717216.1393341309894.JavaMail.root@ifsttar.fr>

Dear Scilab Community, 

I am using the optim function to optimise a two-variable problem (called x1 and x2 ). During the optimisation I monitor the values of those variables as well as the value of the cost function to minimise. 

I find that after 36 iterations that the values of the parameters "did not change much": 

iteration 1 : x1=765 x2=12900 f=1.402D+08 
iteration 36: x1=764.82264 x2=12900 f=1.400D+08 

Is there a way to force the increment value of the parameters that are being optimised? For instance x1 could only be equal to 765, 764, 763... 

My question is similar to this one but I did not find further discussion: http://lists.scilab.org/pipermail/bugzilla/2010-February/000638.html 

Thanks a lot for your help. 


Romain 
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From denis.crete at thalesgroup.com  Tue Feb 25 16:24:19 2014
From: denis.crete at thalesgroup.com (CRETE Denis)
Date: Tue, 25 Feb 2014 16:24:19 +0100
Subject: [Scilab-users] Plotting density values
In-Reply-To: <530C9279.2010206@scilab-enterprises.com>
References: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
 <530C9279.2010206@scilab-enterprises.com>
Message-ID: <2438_1393341860_530CB5A4_2438_16838_1_8F1D40232A0E68409E3FC23A30C3266201690CBE5E41@THSONEA01CMS04P.one.grp>

It looks like you wanted to suggest hist3d<https://help.scilab.org/docs/5.4.1/en_US/hist3d.html>
Denis

De : users [mailto:users-bounces at lists.scilab.org] De la part de Paul Bignier
Envoy? : mardi 25 f?vrier 2014 13:54
? : International users mailing list for Scilab.; W.Schulz at ove.at
Objet : Re: [Scilab-users] Plotting density values


Hi,

It sounds to me like you are trying to use histplot<https://help.scilab.org/docs/5.4.1/en_US/histplot.html>(y,x)?

Regards,
Paul

On 02/25/2014 12:55 PM, SCHULZ Wolfgang wrote:

Hello,

I'm asking for an intelligent method to solve the following problem without a for loop.



I have 2 vectors x an y with e.g. 3000 values. The range of x values is between 0 and 360 and the range of y values is between -15 and 15.

I would like to plot the density of individual grid cells for e.g. dx=10, dy=1 and therefore I would need a matrix with 36x30 values where each value corresponds to the number of data points in the cell.



Any idea who I can do that without a for loop?



Thanks a lot

Wolfgang

_______________________________________________

users mailing list

users at lists.scilab.org<mailto:users at lists.scilab.org>

http://lists.scilab.org/mailman/listinfo/users



--

Paul BIGNIER

Development engineer

-----------------------------------------------------------

Scilab Enterprises

143bis rue Yves Le Coz - 78000 Versailles, France

Phone: +33.1.80.77.04.69

http://www.scilab-enterprises.com
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From romain.desbats at ifsttar.fr  Tue Feb 25 17:52:39 2014
From: romain.desbats at ifsttar.fr (R0M1)
Date: Tue, 25 Feb 2014 08:52:39 -0800 (PST)
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
Message-ID: <1393347159977-4028965.post@n3.nabble.com>

Dear Users,

Trying different compilation methods for this model, I found some
discrepancies in the results that I do not explain so far.

With the same .xcos model and .csv input file as in the first post, I
compile using /xcos_simulate/ and /scicos_simulate/:

The plots shows the difference between the results from the two methods.

Any idea on what is causing this ?

Thanks a lot.

Here is the code:

clear

// parameters
data=csvRead('input.csv',';');
input_current=evstr(data(:,1));
size1=length(input_current);

C=1/12900;
R=765;

T=0.0001; // timestep
time=[0:T:(size1-1)*T]'; // in s
end_time=time($)+T; // end time in s

// loading Xcos functions
loadScicos;
loadXcosLibs();
exec(loadpallibs,-1);

// loading model: creates scs_m
importXcosDiagram('graphic_model.xcos')

// first compilation method
scs_m.props.context=strcat(["C=",string(C),"; R=",string(R),";
T=",string(T)"; end_time=",string(end_time)]);
xcos_simulate(scs_m,4) // '4' is to perform compilation

graph_voltage_1=graph_voltage.values; // output variable

// second compilation method
%scicos_context.C=C;
%scicos_context.R=R;
%scicos_context.T=T;
%scicos_context.end_time=end_time;
Info=scicos_simulate(scs_m,list(),%scicos_context,flag='nw');

graph_voltage_2=graph_voltage.values; // output variable

set("current_figure",10)
plot(time,graph_voltage_1,'-b')
plot(time,graph_voltage_2,'-r')
xtitle('graph title','time (s)','voltage (V)');
hl=legend(['xcos_simulate';'scicos_simulate'],"in_upper_right");




--
View this message in context: http://mailinglists.scilab.org/Scilab-users-Problem-running-xcos-in-batch-mode-from-Scilab-tp4028765p4028965.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From contact at pierre-vuillemin.fr  Tue Feb 25 19:22:50 2014
From: contact at pierre-vuillemin.fr (Pierre Vuillemin)
Date: Tue, 25 Feb 2014 19:22:50 +0100
Subject: [Scilab-users] Increment of parameters in optim function
In-Reply-To: <879307472.3717216.1393341309894.JavaMail.root@ifsttar.fr>
References: <879307472.3717216.1393341309894.JavaMail.root@ifsttar.fr>
Message-ID: <1393352570.3923.32.camel@Pelisse.lan>

Dear Romain,

Just some hints concerning one of the underlying algorithm of optim, the
"quasi newton" one with a Wolfe type line search : this algorithm is a
descent algorithm, i.e given an initial point, it will find a local
minimun of your objective function "near" (in some sense) to the initial
point. 
The main ideas are the following : 
- at each iteration, the gradient of the objective function at the
current position x is computed (and the approximation of the Hessian
which explains the name of "quasi Newton" method). The descent
direction, ie the direction which decreases the function, is given by
the opposite of the gradient, hence the algorithm has to go this way.
But how far? The length of the step in that direction is given by a line
search algorithm
- in this case, it is a Wolfe type line search which means that the step
length is choosen so that the next point ensures (i) a sufficient
decrease in the objective function AND (ii) leads to a sufficient
decrease in the slope of the function (some variations exist between the
Wolfe and strong Wolfe conditions).

The algorithm stops when a local minimum is reached. Concerning your
question, you cannot force the algorithm to move further between two
iterations.
This means that in your case, your initial point may be close to a local
minimum.

Some hints :
- since you only have 2 optimization parameters, you can plot your
objective function to see where are the local minima, or to give you
some indications on what the initial point should be.
- try different initial points to (hopefully) find different local
minima and choose the best one.
- you may want to try evolutionary algorithms (genetic algorithms or
particle swarm optimization) which do not get stuck in local minima. I
think that there is a built-in function or an atom module containing
such algorithm.
(- there exist plenty of other optimization algorithms which may (or may
not) be better suited for your problem depending on its structure)

Hope this helps,

Best regards,

Pierre

Le mardi 25 f?vrier 2014 ? 16:15 +0100, Romain Desbats a ?crit :
> Dear Scilab Community,
> 
> I am using the optim function to optimise a two-variable problem
> (called x1 and x2). During the optimisation I monitor the values of
> those variables as well as the value of the cost function to minimise.
> 
> I find that after 36 iterations that the values of the parameters "did
> not change much":
> 
> iteration 1 : x1=765       x2=12900 f=1.402D+08
> iteration 36: x1=764.82264 x2=12900 f=1.400D+08
> 
> Is there a way to force the increment value of the parameters that are
> being optimised? For instance x1 could only be equal to 765, 764,
> 763...
> 
> My question is similar to this one but I did not find further
> discussion:
> http://lists.scilab.org/pipermail/bugzilla/2010-February/000638.html
> 
> Thanks a lot for your help.
> 
> Romain
> 
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users




From n_hizume at nifty.com  Wed Feb 26 07:08:59 2014
From: n_hizume at nifty.com (Nobuo HIZUME)
Date: Wed, 26 Feb 2014 15:08:59 +0900
Subject: [Scilab-users] Algebraic loop error in Xcos step response
Message-ID: <F6E9C22F177B462FB220F2EDC1C6DE72@E515>

Dear Xcos users who are interested in step response:

I have recently tried step response of dc motor circuit in Xcos.
But to get the attached result, slight modification was necessary because original circuit 
can?t be simulated showing ?Algebraic loop? error .
I needed to change one of the Gains(value=22) into 1st order delay(gain=22, time constant=0.1ms).
Regarding detail refer to the attached ZIP file, which contains Scilab step response too, and the results are the same.

I?d like to know what ?Algebraic loop? error means, and  is there another method to avoid the error?

Regards,
Nobuo HIZUME
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From paul.bignier at scilab-enterprises.com  Wed Feb 26 09:57:13 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Wed, 26 Feb 2014 09:57:13 +0100
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <1393347159977-4028965.post@n3.nabble.com>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
 <1393347159977-4028965.post@n3.nabble.com>
Message-ID: <530DAC69.20908@scilab-enterprises.com>


Hello Romain,

The difference is due to the solver type. Your diagram currently selects 
the ODE solver Sundials/CVode - BDF - Newton.

     "xcos_simulate(scs_m, 4);" detects two continuous states and 
switches to a DAE solver (Sundials/IDA).

     "scicos_simulate(scs_m);" only detects one continuous state and 
keeps the ODE solver.

This must be due to a Modelica compilation difference between xcos and 
scicos.

I don't know the equations of your model so I cannot assess which method 
is correct.

Also, I noticed that the context variables (C, R, T, end_time) are not 
present in the diagram, so what are you trying to change when you modify 
the context? You might want ot use the END 
<http://help.scilab.org/docs/5.4.1/fr_FR/ENDBLK.html> block to set the 
end time.

Hope this helps,
Regards,
Paul


On 02/25/2014 05:52 PM, R0M1 wrote:
> Dear Users,
>
> Trying different compilation methods for this model, I found some
> discrepancies in the results that I do not explain so far.
>
> With the same .xcos model and .csv input file as in the first post, I
> compile using /xcos_simulate/ and /scicos_simulate/:
>
> The plots shows the difference between the results from the two methods.
>
> Any idea on what is causing this ?
>
> Thanks a lot.
>
> Here is the code:
>
> clear
>
> // parameters
> data=csvRead('input.csv',';');
> input_current=evstr(data(:,1));
> size1=length(input_current);
>
> C=1/12900;
> R=765;
>
> T=0.0001; // timestep
> time=[0:T:(size1-1)*T]'; // in s
> end_time=time($)+T; // end time in s
>
> // loading Xcos functions
> loadScicos;
> loadXcosLibs();
> exec(loadpallibs,-1);
>
> // loading model: creates scs_m
> importXcosDiagram('graphic_model.xcos')
>
> // first compilation method
> scs_m.props.context=strcat(["C=",string(C),"; R=",string(R),";
> T=",string(T)"; end_time=",string(end_time)]);
> xcos_simulate(scs_m,4) // '4' is to perform compilation
>
> graph_voltage_1=graph_voltage.values; // output variable
>
> // second compilation method
> %scicos_context.C=C;
> %scicos_context.R=R;
> %scicos_context.T=T;
> %scicos_context.end_time=end_time;
> Info=scicos_simulate(scs_m,list(),%scicos_context,flag='nw');
>
> graph_voltage_2=graph_voltage.values; // output variable
>
> set("current_figure",10)
> plot(time,graph_voltage_1,'-b')
> plot(time,graph_voltage_2,'-r')
> xtitle('graph title','time (s)','voltage (V)');
> hl=legend(['xcos_simulate';'scicos_simulate'],"in_upper_right");
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/Scilab-users-Problem-running-xcos-in-batch-mode-from-Scilab-tp4028765p4028965.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Development engineer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From romain.desbats at ifsttar.fr  Wed Feb 26 10:21:30 2014
From: romain.desbats at ifsttar.fr (R0M1)
Date: Wed, 26 Feb 2014 01:21:30 -0800 (PST)
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <530DAC69.20908@scilab-enterprises.com>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
 <1393347159977-4028965.post@n3.nabble.com>
 <530DAC69.20908@scilab-enterprises.com>
Message-ID: <1393406490356-4028993.post@n3.nabble.com>

Hi Paul,

Thank you very much for your answer. I have changed the model after your
first answer but I forgot to attach it again. I did use the END block.

Thanks for highlighting the difference of solver type. It seems that
Sundials/IDA gives the result I expect. Can you tell me where to check the
solver that have been used for the simulation? (The only variable generated
by running the simulation is %scicos_prob but I can not open it).



--
View this message in context: http://mailinglists.scilab.org/Scilab-users-Problem-running-xcos-in-batch-mode-from-Scilab-tp4028765p4028993.html
Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.


From paul.bignier at scilab-enterprises.com  Wed Feb 26 10:40:09 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Wed, 26 Feb 2014 10:40:09 +0100
Subject: [Scilab-users] Problem running xcos in batch mode from Scilab
In-Reply-To: <1393406490356-4028993.post@n3.nabble.com>
References: <1313506737.1940942.1392806080120.JavaMail.root@ifsttar.fr>
 <1393347159977-4028965.post@n3.nabble.com>
 <530DAC69.20908@scilab-enterprises.com>
 <1393406490356-4028993.post@n3.nabble.com>
Message-ID: <530DB679.4090404@scilab-enterprises.com>


During the compilation, a WARNING is displayed to notify the solver switch.

     xcos_simulate():
         WARNING: Diagram has been compiled for implicit solver
              switching to implicit Solver

     scicos_simualte(): no warning, so no switching.

If the diagram contains continuous states, xcos and scicos are supposed 
to detect the problem type (ODE or DAE) and switch to the default one 
(Sundials/BDF-Newton for ODE and Sundials/IDA for DAE) if the Setup 
solver is not adapted.


On 02/26/2014 10:21 AM, R0M1 wrote:
> Hi Paul,
>
> Thank you very much for your answer. I have changed the model after your
> first answer but I forgot to attach it again. I did use the END block.
>
> Thanks for highlighting the difference of solver type. It seems that
> Sundials/IDA gives the result I expect. Can you tell me where to check the
> solver that have been used for the simulation? (The only variable generated
> by running the simulation is %scicos_prob but I can not open it).
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/Scilab-users-Problem-running-xcos-in-batch-mode-from-Scilab-tp4028765p4028993.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Development engineer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com



From stephane.mottelet at gmail.com  Wed Feb 26 11:39:28 2014
From: stephane.mottelet at gmail.com (=?UTF-8?B?U3TDqXBoYW5lIE1vdHRlbGV0?=)
Date: Wed, 26 Feb 2014 11:39:28 +0100
Subject: [Scilab-users] Test
In-Reply-To: <1393352570.3923.32.camel@Pelisse.lan>
References: <879307472.3717216.1393341309894.JavaMail.root@ifsttar.fr>
 <1393352570.3923.32.camel@Pelisse.lan>
Message-ID: <530DC460.5050800@gmail.com>

Sorry, this is a test...

S.


From W.Schulz at ove.at  Wed Feb 26 15:44:01 2014
From: W.Schulz at ove.at (SCHULZ Wolfgang)
Date: Wed, 26 Feb 2014 14:44:01 +0000
Subject: [Scilab-users] Plotting density values
In-Reply-To: <530CAF50.50001@inria.fr>
References: <07A8AF089844A549B0F0CCC727AF31AA56F95F7D@OVEKBG.ove.at>
 <530CAF50.50001@inria.fr>
Message-ID: <07A8AF089844A549B0F0CCC727AF31AA56F968D6@OVEKBG.ove.at>

Wow - this was exactly what I was searching for.
Thanks a lot
Wolfgang

> -----Urspr?ngliche Nachricht-----
> Von: users [mailto:users-bounces at lists.scilab.org] Im Auftrag von Serge Steer
> Gesendet: Dienstag, 25. Februar 2014 15:57
> An: users at lists.scilab.org
> Betreff: Re: [Scilab-users] Plotting density values
> 
> The following function does the job but with one loop. It is based on the 1D
> classification function dsearch Serg Steer
> 
> 
> function occ=dsearch2D(xy,dx,dy,opt)
> //x,y coordinates of the points of the cloud
> //dx, discretization of the x axis
> //dy , discretization of the y axis
> //occ, table such as occ(i,j) contains the number of points in the
> //"pixel" [dx(i) dx(i+1)) x [dy(j) dy(j+1))
>    if argn(2)<4 then opt='c';end
>    if and(opt<>["c","d"]) then
>      error(msprintf(_("%: unknown char specifier (must be ''c'' or
> ''d'')\n"),"dsearch2D"))
>    end
>    if size(xy,2)<>2 then
>      error("Wrong dimension for first argument")
>    end
>    [indx,occx]=dsearch(xy(:,1),dx,opt);
>    occ=[];
>    dy=matrix(dy,1,-1);
>    for k=1:length(dx)-1
>      i=find(indx==k);
>      [indy,occy]=dsearch(xy(i,2),dy,opt);
>      occ=[occ; occy];
>    end
> endfunction
> 
> 
> 
> 
> Le 25/02/2014 12:55, SCHULZ Wolfgang a ?crit :
> > Hello,
> > I'm asking for an intelligent method to solve the following problem without a
> for loop.
> >
> > I have 2 vectors x an y with e.g. 3000 values. The range of x values is between
> 0 and 360 and the range of y values is between -15 and 15.
> > I would like to plot the density of individual grid cells for e.g. dx=10, dy=1 and
> therefore I would need a matrix with 36x30 values where each value
> corresponds to the number of data points in the cell.
> >
> > Any idea who I can do that without a for loop?
> >
> > Thanks a lot
> > Wolfgang
> > _______________________________________________
> > users mailing list
> > users at lists.scilab.org
> > http://lists.scilab.org/mailman/listinfo/users
> >
> 
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users


From W.Schulz at ove.at  Wed Feb 26 15:56:25 2014
From: W.Schulz at ove.at (SCHULZ Wolfgang)
Date: Wed, 26 Feb 2014 14:56:25 +0000
Subject: [Scilab-users] Bug?
Message-ID: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>

Hello,
I'm not sure this is a bug - therefore I want to ask her first:
I'm using Scilab 5.4.1 64 bit under Win7:
Depending on the size of the figure the axis are disappearing or not.

Is it a bug or can I avoid/circumvent this feature somehow?
Thanks a lot
Wolfgang
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From calixte.denizet at scilab-enterprises.com  Wed Feb 26 16:07:52 2014
From: calixte.denizet at scilab-enterprises.com (Calixte Denizet)
Date: Wed, 26 Feb 2014 16:07:52 +0100
Subject: [Scilab-users] Bug?
In-Reply-To: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>
References: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>
Message-ID: <530E0348.5050008@scilab-enterprises.com>

Hi Wolfgang,

It is probably a bug.
Could you report it on bugzilla.scilab.org with a little test case please ?

Thanks

Best regards

Calixte

On 26/02/2014 15:56, SCHULZ Wolfgang wrote:
> Hello,
> I'm not sure this is a bug - therefore I want to ask her first:
> I'm using Scilab 5.4.1 64 bit under Win7:
> Depending on the size of the figure the axis are disappearing or not.
>
> Is it a bug or can I avoid/circumvent this feature somehow?
> Thanks a lot
> Wolfgang
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users


-- 
Calixte Denizet
Software Development Engineer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
http://www.scilab-enterprises.com

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From antoine.monmayrant at laas.fr  Wed Feb 26 16:28:41 2014
From: antoine.monmayrant at laas.fr (Antoine Monmayrant)
Date: Wed, 26 Feb 2014 16:28:41 +0100
Subject: [Scilab-users] Bug?
In-Reply-To: <530E0348.5050008@scilab-enterprises.com>
References: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>
 <530E0348.5050008@scilab-enterprises.com>
Message-ID: <530E0829.5060604@laas.fr>

On 02/26/2014 04:07 PM, Calixte Denizet wrote:
> Hi Wolfgang,
>
> It is probably a bug.
> Could you report it on bugzilla.scilab.org with a little test case 
> please ?
And if you post the test case here, I'll try to reproduce it on linux...

Antoine
>
> Thanks
>
> Best regards
>
> Calixte
>
> On 26/02/2014 15:56, SCHULZ Wolfgang wrote:
>> Hello,
>> I'm not sure this is a bug - therefore I want to ask her first:
>> I'm using Scilab 5.4.1 64 bit under Win7:
>> Depending on the size of the figure the axis are disappearing or not.
>>
>> Is it a bug or can I avoid/circumvent this feature somehow?
>> Thanks a lot
>> Wolfgang
>>
>>
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
>
>
> -- 
> Calixte Denizet
> Software Development Engineer
> -----------------------------------------------------------
> Scilab Enterprises
> 143bis rue Yves Le Coz - 78000 Versailles, France
> http://www.scilab-enterprises.com
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
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From athanasiou at dica.unict.it  Wed Feb 26 16:13:19 2014
From: athanasiou at dica.unict.it (Anastasia Athanasiou)
Date: Wed, 26 Feb 2014 16:13:19 +0100
Subject: [Scilab-users] fmincon won't work
Message-ID: <e67c2b5260484fb576031bf8f6a0308f.squirrel@webmail.cdc.unict.it>

Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
I installed fmincon 0.3.1-1 using atoms, but when I tried it on the first
help example I obtained a rather weird output:

fval  =    0.

x  = 10^(-318) *    Inf    Inf

Could anyone help me please?

Thank you in advance, Natasha



From paul.bignier at scilab-enterprises.com  Wed Feb 26 16:46:24 2014
From: paul.bignier at scilab-enterprises.com (Paul Bignier)
Date: Wed, 26 Feb 2014 16:46:24 +0100
Subject: [Scilab-users] fmincon won't work
In-Reply-To: <e67c2b5260484fb576031bf8f6a0308f.squirrel@webmail.cdc.unict.it>
References: <e67c2b5260484fb576031bf8f6a0308f.squirrel@webmail.cdc.unict.it>
Message-ID: <530E0C50.4050809@scilab-enterprises.com>


Hello,

Did you check that your problem matched the cases described on fmincon 
home page <http://atoms.scilab.org/toolboxes/fmincon>?

Regards,
Paul


On 02/26/2014 04:13 PM, Anastasia Athanasiou wrote:
> Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
> I installed fmincon 0.3.1-1 using atoms, but when I tried it on the first
> help example I obtained a rather weird output:
>
> fval  =    0.
>
> x  = 10^(-318) *    Inf    Inf
>
> Could anyone help me please?
>
> Thank you in advance, Natasha
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users

-- 
Paul BIGNIER
Development engineer
-----------------------------------------------------------
Scilab Enterprises
143bis rue Yves Le Coz - 78000 Versailles, France
Phone: +33.1.80.77.04.69
http://www.scilab-enterprises.com

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From stephane.mottelet at utc.fr  Wed Feb 26 20:25:38 2014
From: stephane.mottelet at utc.fr (=?ISO-8859-1?Q?=22St=E9phane_Mottelet_=28UTC=29=22?=)
Date: Wed, 26 Feb 2014 20:25:38 +0100
Subject: [Scilab-users] fmincon won't work
In-Reply-To: <CAB4PXHd2qVfKxR9hRMaw66ocSmPq7Gb8qSsdRKy_LocJrR69FA@mail.gmail.com>
References: <e67c2b5260484fb576031bf8f6a0308f.squirrel@webmail.cdc.unict.it>
 <530E0C50.4050809@scilab-enterprises.com>
 <CAB4PXHd2qVfKxR9hRMaw66ocSmPq7Gb8qSsdRKy_LocJrR69FA@mail.gmail.com>
Message-ID: <530E3FB2.5050301@utc.fr>

Hello,

Currently, sci_ipopt seems to be broken on Linux and MacOSX when using 
the atoms package for Scilab 5.4.1. Since fmincon relies on sci_ipot, 
fmicon is equally broken... BTW, users needing an optimization toolbox 
with general non-linear constraints are not lucky with Scilab. As far as 
I am concerned, I still use fsqp, which cannot be easily released as an 
Atoms module because of proprietary code. But Ipopt is said to really 
outperform fsqp, so I am rather impatient to see it coming.

As it is the only module of this class/kind (optimization + 
complementary module), the Scilab team should take care of the 
functionnality of it when new versions of Scilab are released.

St?phane


Le 26/02/2014 20:13, St?phane Mottelet a ?crit :
>
>
> ---------- Forwarded message ----------
> From: *Paul Bignier* <paul.bignier at scilab-enterprises.com 
> <mailto:paul.bignier at scilab-enterprises.com>>
> Date: 2014-02-26 16:46 GMT+01:00
> Subject: Re: [Scilab-users] fmincon won't work
> To: athanasiou at dica.unict.it <mailto:athanasiou at dica.unict.it>, 
> "International users mailing list for Scilab." <users at lists.scilab.org 
> <mailto:users at lists.scilab.org>>
>
>
>
> Hello,
>
> Did you check that your problem matched the cases described on fmincon 
> home page <http://atoms.scilab.org/toolboxes/fmincon>?
>
> Regards,
> Paul
>
>
>
> On 02/26/2014 04:13 PM, Anastasia Athanasiou wrote:
>> Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
>> I installed fmincon 0.3.1-1 using atoms, but when I tried it on the first
>> help example I obtained a rather weird output:
>>
>> fval  =    0.
>>
>> x  = 10^(-318) *    Inf    Inf
>>
>> Could anyone help me please?
>>
>> Thank you in advance, Natasha
>>
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org  <mailto:users at lists.scilab.org>
>> http://lists.scilab.org/mailman/listinfo/users
>
> -- 
> Paul BIGNIER
> Development engineer
> -----------------------------------------------------------
> Scilab Enterprises
> 143bis rue Yves Le Coz - 78000 Versailles, France
> Phone:+33.1.80.77.04.69  <tel:%2B33.1.80.77.04.69>
> http://www.scilab-enterprises.com  
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org <mailto:users at lists.scilab.org>
> http://lists.scilab.org/mailman/listinfo/users
>
>

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From W.Schulz at ove.at  Wed Feb 26 20:38:30 2014
From: W.Schulz at ove.at (SCHULZ Wolfgang)
Date: Wed, 26 Feb 2014 19:38:30 +0000
Subject: [Scilab-users] Bug?
In-Reply-To: <530E0348.5050008@scilab-enterprises.com>
References: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>
 <530E0348.5050008@scilab-enterprises.com>
Message-ID: <07A8AF089844A549B0F0CCC727AF31AA56F96A8F@OVEKBG.ove.at>

I reported it - bug ID 13255.
Thanks
Wolfgang

Von: users [mailto:users-bounces at lists.scilab.org] Im Auftrag von Calixte Denizet
Gesendet: Mittwoch, 26. Februar 2014 16:08
An: users at lists.scilab.org
Betreff: Re: [Scilab-users] Bug?

Hi Wolfgang,

It is probably a bug.
Could you report it on bugzilla.scilab.org with a little test case please ?

Thanks

Best regards

Calixte

On 26/02/2014 15:56, SCHULZ Wolfgang wrote:

Hello,

I'm not sure this is a bug - therefore I want to ask her first:

I'm using Scilab 5.4.1 64 bit under Win7:

Depending on the size of the figure the axis are disappearing or not.



Is it a bug or can I avoid/circumvent this feature somehow?

Thanks a lot

Wolfgang




_______________________________________________

users mailing list

users at lists.scilab.org<mailto:users at lists.scilab.org>

http://lists.scilab.org/mailman/listinfo/users




--

Calixte Denizet

Software Development Engineer

-----------------------------------------------------------

Scilab Enterprises

143bis rue Yves Le Coz - 78000 Versailles, France

http://www.scilab-enterprises.com
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From W.Schulz at ove.at  Wed Feb 26 20:39:22 2014
From: W.Schulz at ove.at (SCHULZ Wolfgang)
Date: Wed, 26 Feb 2014 19:39:22 +0000
Subject: [Scilab-users] Bug?
In-Reply-To: <530E0829.5060604@laas.fr>
References: <07A8AF089844A549B0F0CCC727AF31AA56F968ED@OVEKBG.ove.at>
 <530E0348.5050008@scilab-enterprises.com> <530E0829.5060604@laas.fr>
Message-ID: <07A8AF089844A549B0F0CCC727AF31AA56F96A9C@OVEKBG.ove.at>

Hello,
the test case is attached.
Wolfgang

Von: users [mailto:users-bounces at lists.scilab.org] Im Auftrag von Antoine Monmayrant
Gesendet: Mittwoch, 26. Februar 2014 16:29
An: International users mailing list for Scilab.
Betreff: Re: [Scilab-users] Bug?

On 02/26/2014 04:07 PM, Calixte Denizet wrote:
Hi Wolfgang,

It is probably a bug.
Could you report it on bugzilla.scilab.org with a little test case please ?
And if you post the test case here, I'll try to reproduce it on linux...

Antoine


Thanks

Best regards

Calixte

On 26/02/2014 15:56, SCHULZ Wolfgang wrote:

Hello,

I'm not sure this is a bug - therefore I want to ask her first:

I'm using Scilab 5.4.1 64 bit under Win7:

Depending on the size of the figure the axis are disappearing or not.



Is it a bug or can I avoid/circumvent this feature somehow?

Thanks a lot

Wolfgang




_______________________________________________

users mailing list

users at lists.scilab.org<mailto:users at lists.scilab.org>

http://lists.scilab.org/mailman/listinfo/users




--

Calixte Denizet

Software Development Engineer

-----------------------------------------------------------

Scilab Enterprises

143bis rue Yves Le Coz - 78000 Versailles, France

http://www.scilab-enterprises.com




_______________________________________________

users mailing list

users at lists.scilab.org<mailto:users at lists.scilab.org>

http://lists.scilab.org/mailman/listinfo/users
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From athanasiou at dica.unict.it  Thu Feb 27 09:58:11 2014
From: athanasiou at dica.unict.it (Anastasia Athanasiou)
Date: Thu, 27 Feb 2014 09:58:11 +0100
Subject: [Scilab-users] fmincon won't work
In-Reply-To: <530E3FB2.5050301@utc.fr>
References: <e67c2b5260484fb576031bf8f6a0308f.squirrel@webmail.cdc.unict.it>
 <530E0C50.4050809@scilab-enterprises.com>
 <CAB4PXHd2qVfKxR9hRMaw66ocSmPq7Gb8qSsdRKy_LocJrR69FA@mail.gmail.com>
 <530E3FB2.5050301@utc.fr>
Message-ID: <e716bfb918cb7dd4750573af6ebb4cce.squirrel@webmail.cdc.unict.it>

Thank you St?phane,

actually I tried fmincon in the previous Scilab version (5.3.3) and it
works there!

Have a nice day!

Regards, Anastasia




> Hello,
>
> Currently, sci_ipopt seems to be broken on Linux and MacOSX when using
> the atoms package for Scilab 5.4.1. Since fmincon relies on sci_ipot,
> fmicon is equally broken... BTW, users needing an optimization toolbox
> with general non-linear constraints are not lucky with Scilab. As far as
> I am concerned, I still use fsqp, which cannot be easily released as an
> Atoms module because of proprietary code. But Ipopt is said to really
> outperform fsqp, so I am rather impatient to see it coming.
>
> As it is the only module of this class/kind (optimization +
> complementary module), the Scilab team should take care of the
> functionnality of it when new versions of Scilab are released.
>
> St?phane
>
>
> Le 26/02/2014 20:13, St?phane Mottelet a ?crit :
>>
>>
>> ---------- Forwarded message ----------
>> From: *Paul Bignier* <paul.bignier at scilab-enterprises.com
>> <mailto:paul.bignier at scilab-enterprises.com>>
>> Date: 2014-02-26 16:46 GMT+01:00
>> Subject: Re: [Scilab-users] fmincon won't work
>> To: athanasiou at dica.unict.it <mailto:athanasiou at dica.unict.it>,
>> "International users mailing list for Scilab." <users at lists.scilab.org
>> <mailto:users at lists.scilab.org>>
>>
>>
>>
>> Hello,
>>
>> Did you check that your problem matched the cases described on fmincon
>> home page <http://atoms.scilab.org/toolboxes/fmincon>?
>>
>> Regards,
>> Paul
>>
>>
>>
>> On 02/26/2014 04:13 PM, Anastasia Athanasiou wrote:
>>> Hello everyone! I am a new Scilab 5.4.1 user (in Ubuntu 12.04.4).
>>> I installed fmincon 0.3.1-1 using atoms, but when I tried it on the
>>> first
>>> help example I obtained a rather weird output:
>>>
>>> fval  =    0.
>>>
>>> x  = 10^(-318) *    Inf    Inf
>>>
>>> Could anyone help me please?
>>>
>>> Thank you in advance, Natasha
>>>
>>> _______________________________________________
>>> users mailing list
>>> users at lists.scilab.org  <mailto:users at lists.scilab.org>
>>> http://lists.scilab.org/mailman/listinfo/users
>>
>> --
>> Paul BIGNIER
>> Development engineer
>> -----------------------------------------------------------
>> Scilab Enterprises
>> 143bis rue Yves Le Coz - 78000 Versailles, France
>> Phone:+33.1.80.77.04.69  <tel:%2B33.1.80.77.04.69>
>> http://www.scilab-enterprises.com
>>
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org <mailto:users at lists.scilab.org>
>> http://lists.scilab.org/mailman/listinfo/users
>>
>>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>




From clement.david at scilab-enterprises.com  Thu Feb 27 15:45:59 2014
From: clement.david at scilab-enterprises.com (=?ISO-8859-1?Q?Cl=E9ment?= David)
Date: Thu, 27 Feb 2014 15:45:59 +0100
Subject: [Scilab-users] Trying to use old Scicos file with Xcos
In-Reply-To: <CAP6=J4kqYKDjRJjdBuX4ni5d8UGjL4d_PEtSMefvFN1uVz0U0g@mail.gmail.com>
References: <1391382524436-4028498.post@n3.nabble.com>
 <1391506993.5710.5.camel@paros>
 <CAP6=J4kqYKDjRJjdBuX4ni5d8UGjL4d_PEtSMefvFN1uVz0U0g@mail.gmail.com>
Message-ID: <1393512359.2204.3.camel@paros>

Hello,

Sorry for the lag, please provide it as a zcos email attachment.

--
Cl?ment

Le mercredi 05 f?vrier 2014 ? 11:52 -0500, John David Heinzmann a
?crit :
> Hi, Cl?ment,
> 
> 
> I am new here, so would you tell me the best way to provide my model?
>  Simply as an email attachment?  .zcos format to save space?
> 
> 
> Thanks.
> 
> 
> JD
> 
> 
> On Tue, Feb 4, 2014 at 4:43 AM, Cl?ment David
> <clement.david at scilab-enterprises.com> wrote:
>         Hello,
>         
>         It should work fine but it is model related. Can you provide
>         your
>         model ?
>         
>         --
>         Cl?ment
>         
>         Le dimanche 02 f?vrier 2014 ? 15:08 -0800, JD Heinzmann a
>         ?crit :
>         > About 3 years ago I developed a Scicos simulation of a heat
>         engine using
>         > ScicosLab-4.4b8 with Scicos 4.4.  I have just downloaded
>         Scilab 5.4.1 and
>         > would like to run this old simulation under Xcos.
>         >
>         > I can open the old .cos file in Xcos and see the blocks and
>         navigate into
>         > the super-block hierarchy just fine.  I can save this block
>         diagram as .xcos
>         > and .zcos files just fine.  I can load the context file into
>         Scilab and run
>         > it to set up the workspace before running the simulation.
>          But when I try to
>         > run the simulation under Xcos, Scilab and Xcos immediately
>         quits silently
>         > (with no error messages).
>         >
>         > Are Scicos files not compatible with Xcos?  If not, what do
>         I need to do to
>         > adjust my model to work with Xcos?
>         >
>         > Thank you!
>         >
>         > JD
>         >
>         >
>         >
>         > --
>         > View this message in context:
>         http://mailinglists.scilab.org/Trying-to-use-old-Scicos-file-with-Xcos-tp4028498.html
>         > Sent from the Scilab users - Mailing Lists Archives mailing
>         list archive at Nabble.com.
>         > _______________________________________________
>         > users mailing list
>         > users at lists.scilab.org
>         > http://lists.scilab.org/mailman/listinfo/users
>         
>         
>         _______________________________________________
>         users mailing list
>         users at lists.scilab.org
>         http://lists.scilab.org/mailman/listinfo/users
>         
> 
> 
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users




From athanasiou at dica.unict.it  Thu Feb 27 19:57:54 2014
From: athanasiou at dica.unict.it (natasha)
Date: Thu, 27 Feb 2014 10:57:54 -0800 (PST)
Subject: [Scilab-users] CMA-ES boundary handling in scilab
Message-ID: <1393527474008-4029013.post@n3.nabble.com>

Hello everyone,

I am currently working on translating an optimization problem (solved with
CMA-ES) from Matlab to Scilab.

If I have understood properly cma_optim does not contain any Matlab
equivalent option of optsLB, opts.UB .

In the source page there is a comment on boundary handling 
https://www.lri.fr/~hansen/cmaes_inmatlab.html
<https://www.lri.fr/~hansen/cmaes_inmatlab.html>  .

Has anyone ever tried establishing a search space for the CMA-ES in Scilab?

Thank you very much for your attention, Anastasia





--
View this message in context: http://mailinglists.scilab.org/CMA-ES-boundary-handling-in-scilab-tp4029013.html
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From cfuttrup at gmail.com  Thu Feb 27 20:07:29 2014
From: cfuttrup at gmail.com (Claus Futtrup)
Date: Thu, 27 Feb 2014 20:07:29 +0100
Subject: [Scilab-users] CMA-ES boundary handling in scilab
In-Reply-To: <1393527474008-4029013.post@n3.nabble.com>
References: <1393527474008-4029013.post@n3.nabble.com>
Message-ID: <530F8CF1.5080302@gmail.com>

Hi Natasha

I have several years of experience with CMA-ES. I am also the author of 
the Scilab ATOMS module you can find here:

https://atoms.scilab.org/toolboxes/CMA-ES

I am well aware the code is not working well with Scilab (i.e. if you 
install the ATOMS module it does something bad to your Scilab and the 
Scilab GUI doesn't work).

I don't know what to do about it (need help from Scilab experts). You 
could say, Scilab needs to document their ATOMS properly, so that 
independent people (like me) can make fully working ATOMS modules.

Regarding search space, I have successfully implemented much of this. 
You can write me in private ( cfuttrup -at- gmail.com ), not to 
unnecessarily disturb this Scilab forum.

Best regards,
Claus

On 2/27/2014 19:57, natasha wrote:
> Hello everyone,
>
> I am currently working on translating an optimization problem (solved with
> CMA-ES) from Matlab to Scilab.
>
> If I have understood properly cma_optim does not contain any Matlab
> equivalent option of optsLB, opts.UB .
>
> In the source page there is a comment on boundary handling
> https://www.lri.fr/~hansen/cmaes_inmatlab.html
> <https://www.lri.fr/~hansen/cmaes_inmatlab.html>  .
>
> Has anyone ever tried establishing a search space for the CMA-ES in Scilab?
>
> Thank you very much for your attention, Anastasia
>
>
>
>
>
> --
> View this message in context: http://mailinglists.scilab.org/CMA-ES-boundary-handling-in-scilab-tp4029013.html
> Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users
>


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From rasleendeol at yahoo.com  Fri Feb 28 08:07:28 2014
From: rasleendeol at yahoo.com (rasleendeol)
Date: Thu, 27 Feb 2014 23:07:28 -0800 (PST)
Subject: [Scilab-users] operations on a DAG
Message-ID: <1393571248887-4029021.post@n3.nabble.com>

i have implemented a directed acyclic graph in Matlab n would like to know
how to perform operations such as to find critical path, bottom-level,
top-level...etc.
also, clustering needs to be done based upon the critical paths.



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From sgougeon at free.fr  Fri Feb 28 11:18:37 2014
From: sgougeon at free.fr (sgougeon at free.fr)
Date: Fri, 28 Feb 2014 11:18:37 +0100 (CET)
Subject: [Scilab-users] operations on a DAG
In-Reply-To: <1393571248887-4029021.post@n3.nabble.com>
Message-ID: <1220328945.1039149172.1393582717804.JavaMail.root@zimbra75-e12.priv.proxad.net>

Hello,
Metanet might be your friend:
http://atoms.scilab.org/toolboxes/metanet
It should be available through the ATOMS module manager (open box icon in the console toolbar).
Regards
Samuel


----- Mail original -----
De: "rasleendeol" <rasleendeol at yahoo.com>
?: users at lists.scilab.org
Envoy?: Vendredi 28 F?vrier 2014 08:07:28
Objet: [Scilab-users] operations on a DAG

i have implemented a directed acyclic graph in Matlab n would like to know
how to perform operations such as to find critical path, bottom-level,
top-level...etc.
also, clustering needs to be done based upon the critical paths.