[Scilab-users] Running an .sce from the command line. message 9 (scilab: message 11 of 20) of 20)

[scilab.20.browseruk at xoxy.net]

Tim, 

I've implemented that, and it certainly avoids the singularity; but creates other problems.

For example: To choose the colors for successive plots, I set up a list:

rgb = list( [0,0,0], [1,0,0], [0,1,0], [0,0,1], ... );

and supplied the color to plot using:

    for i = 1:size( files, 'r' )
        [ H, tH ] = fscanfMat( files(i), "%lg" );
        ...
        plot( a, b, 'color', rgb(i) )
    end

but plot2d() requires a *color index*

So (after trying a bunch of other things) I came up with:

    rgb = list( color(0,0,0), color(1,0,0), color(0,1,0), color(0,0,1), ... );

    for i = 1:size( files, 'r' )
        [ H, tH ] = fscanfMat( files(i), "%lg" );
        ...
        plot2d( 'ln', a, b, style = [ rgb(i) ] );
    end

which compiles and runs without error, but draws everything in black?

I need a logflag parameter for plot(); or a sane color(rgb) option for plot2d()?

Alternatively, insight to whatever magic/error trapping/error control that the plot2d( 'nl' ) flag uses to avoid the singularity problem?

Cheers, Buk.

(BTW: I enjoyed reading the bits of your book you pointed me at; and (with your permission) I might ask for a little 'advice' off-list on the subject of friction: aluminium on teflon and the problems of 'creep'. Be warned before you agree. I know next to nothing about friction! )


> -----Original Message-----
> From: scilab.browseruk.1ebb8b2ddb.tim#wescottdesign.com at ob.0sg.net
> Sent: Thu, 31 Mar 2016 17:33:23 -0700
> To: users at lists.scilab.org
> Subject: Re: [Scilab-users] Running an .sce from the command line.
> message 9 (scilab: message 11 of 20) of 20)
> 
> 
> 
> plot2d (a, b, logflag = "ln")
> Look at help for plot2d for details.
> 
> 
> Sent from my Verizon Wireless 4G LTE smartphone
> 
> -------- Original message --------
> From: scilab.20.browseruk at xoxy.net
> Date: 03/31/2016  4:38 PM  (GMT-07:00)
> To: users at lists.scilab.org
> Subject: Re: [Scilab-users] Running an .sce from the command line.
> message 9
>   of 20)
> 
> Samuel,
> 
> Thanks. I had to do it in two steps:
> 
>     f = gcf();
>     f.closerequestfcn="exit(0)";
> 
> otherwise I get:
> 
>     gcf().closerequestfcn="exit(0)";
>          !--error 2
>     Invalid factor.
> 
> The focus still returns to the command line console pushing the graphics
> window into the background and meaning I have to go looking for it to see
> the plot; but when I close it the console exits back to the OS.
> 
> Next problem, that should probably be a new thread: How to avoid the
> Singularity of log function from preventing the script completing if the
> data contains zeros?
> 
> I'm doing:
> 
>     plot( log10( a ), b );
> 
> To produce the log plot.
> 
> 
> 
>> -----Original Message-----
>> From: scilab.browseruk.bb30c473ec.sgougeon#free.fr at ob.0sg.net
>> Sent: Thu, 31 Mar 2016 21:09:20 +0200
>> To: users at lists.scilab.org
>> Subject: Re: [Scilab-users] Running an .sce from the command line.
>> (scilab: message 9 of 20)
>> 
>> Hello,
>> 
>> Le 31/03/2016 20:35, scilab.20.browseruk at xoxy.net a écrit :
>>> Hi,
>>> 
>>> I can run my .sce file which produces a graph from a file of data from
>>> the (windows) command line using:
>>> 
> >>      scilex -f myscript.sce filename.rdat
>>> 
>>> and that works except:
>>> 
>>> Once the plot() executes and the graphic window appears, control and
>>> focus returns to the interactive command line.
>> Scilab's console, i guess not the shell terminal.
>> 
>>> That's okay; but it'd would be really nice if the focus remained on the
>>> graphic window until it was closed and then the scilab shell exited
>>> automatically.
>> Graphics are not modal: AFAIK it is not possible to lock the console
>> with a figure until the figure is closed (or until any other event)(you
>> could use a for loop waiting for an event ; but it won't reject CTRL-C
>> interruptions).
>> However, to close automatically Scilab when the figure is closed, you
>> may add the following in your script:
>> gcf().closerequestfcn="exit(0)";
>> 
>> HTH
>> Samuel
>> 
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
> 
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