[scilab-Users] Bug or restriction with matrices?

[Daniele Andreucci]

Lucio Agostinho Rocha wrote on 06/05/09 04:35:
> Hi,
> 
> I'm working with matrices and I observed this strange behavior. I'd like to acquire as result a matrix with ten lines and ten columns. Then, I tried two things:
> 
> //---Start program
> clear;
> m=zeros(10,10);
> function [] = test()
>     
>   test1(m);
>   
>   m(5,1)=1;
>   disp(m);
> endfunction
> 
> function [] = test1(m)
>   
>   m(5,1)=1;
>   disp(m);
>   
> endfunction
> 
> //---End program
> 
> When I use 'test1' function I acquire the expected result, but when I use only 'test' function, considering 'm' as global, the attribution 'cut' my matrix. Why this occurs?
> 
> Thanks in advance,
> 
> Lucio
> .....
> 
> 

Dear Lucio,

was it because you did not declare

global m;

inside test?

This way it works for me.


If you also declare

global m;

in the main program, m is changed globally.



Daniele



-- 
[ Daniele Andreucci
[ Dip. di Metodi e Modelli Matematici
[ via A. Scarpa 16     00161 Roma, Italy
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