[Scilab-users] Regarding simple numerical operations result display.

[Rafael Guerra]

Hi,

The last 'for' loop provided by Stefan is the "correct" simple way of
implementing the basic task requested.

Just for fun, the same result can be obtained by using a single boolean math
command:
--> bool2s(y<=a).*(y-b) + b
 ans  =
  - 11.  - 6.  - 1.    4.    100.  

Rgds
Rafael

-----Original Message-----
From: users-bounces at lists.scilab.org [mailto:users-bounces at lists.scilab.org]
On Behalf Of Stefan Du Rietz
Sent: Sunday, March 17, 2013 6:05 PM
To: users at lists.scilab.org
Subject: Re: [Scilab-users] Regarding simple numerical operations result
display.

Maybe one of the last two of these four loops was what you wanted:

-->bool2s(y>a)
  ans  =
     0.    0.    0.    0.    1.

-->for k=bool2s(y>a), if k, disp(b), else, disp(y), end, end
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
     100.

-->for k=y, if k>a, disp(b), else, disp(y), end, end
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
   - 11.  - 6.  - 1.    4.    9.
     100.

Here, k takes the value of each element in y:

-->for k=y, if k>a, disp(b), else, disp(k), end, end
   - 11.
   - 6.
   - 1.
     4.
     100.

Or maybe this is easier to follow:

-->for k=1:length(y), if y(k)>a, disp(b), else, disp(y(k)), end, end
   - 11.
   - 6.
   - 1.
     4.
     100.

/Stefan

On 2013-03-17 20:46, Stefan Du Rietz wrote:
--------------------
> Sorry,
> I should have written (?):
>
> A multi-element logical array is true (T) only if all elements are T.
> -->and(y>a)
>   ans  =
>    F
>
> /Stefan
>
> On 2013-03-17 20:35, Stefan Du Rietz wrote:
> --------------------
>> -->y=(5*x)-1
>>   y  =
>>    - 11.  - 6.  - 1.    4.    9.
>>
>> -->y>a
>>   ans  =
>>    F F F F T
>>
>> This is F (the first element)
>>
>> /Stefan
>>
>>
>> On 2013-03-17 20:23, Modestas Bunokas wrote:
>> --------------------
>>> If someone will find 2 min of free time, I would be very grateful. 
>>> I'm somehow getting weird result doing simple operation like:
>>>
>>> a=7;  b=100;  x=[-2:1:2];  y=(5*x)-1; if  y>a  then  disp(b);
>>>      else  disp(y);
>>> end
>>>
>>> --> - 11.  - 6.  - 1.    4.    9.
>>>
>>> Last result (9) is wrong, it should be 100 (b). I fully understand 
>>> that it's because of lack of my knowledge in programming but in few 
>>> days I could not solve or even could not find any help. Because of 
>>> that writing here.
>>>
>>>
>>> _______________________________________________
>>> users mailing list
>>> users at lists.scilab.org
>>> http://lists.scilab.org/mailman/listinfo/users
>>>
>>
>> _______________________________________________
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>
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