Thread Subject: change matrix name in iteration

Hi
this would be stupid but i cant find a way to rename a matrix during loop iterations
see
eval(['y_' num2str(counter) '=' x(:,i:i+9) ])
in this statement i want 'y' to be matrix and since this very line will run 10 times so at the end i should have 10 different matrices as y_1, y_2, ...,y_10
but i suppose this line works only as singular value
i would be obliged if someone helps me out of this
Thanks

On 4/15/2011 4:15 AM, Abdul Rauf Anwar wrote:
> Hi
> this would be stupid but i cant find a way to rename a matrix during loop iterations
> see
> eval(['y_' num2str(counter) '=' x(:,i:i+9) ])
> in this statement i want 'y' to be matrix and since this very line will
> run 10 times so at the end i should have 10 different matrices as y_1, y_2, ...,y_10
> but i suppose this line works only as singular value
> i would be obliged if someone helps me out of this
> Thanks

I do not think the above is a good way to do things.

If you want at the end 10 different matrices, then
make a 3D matrix, and use the index to locate
your 10 matrices.

This allocates 10 matrix, each of size 5 by 5:

  A=zeros(5,5,10);

Simply then do

    c = A(:,:,i)

to obtain the 'ith' matrix.

It is important to first sit and think carfully about your data
structure.

Remember what Wirth said: algorithms + data structures - programs

--Nasser

On 4/15/2011 4:29 AM, Nasser M. Abbasi wrote:

>
> Remember what Wirth said: algorithms + data structures - programs
>

opps, "-" --> "=" ofcourse

--Nasser

On 4/15/2011 6:15 AM, Abdul Rauf Anwar wrote:
> Hi
> this would be stupid but i cant find a way to rename a matrix during
> loop iterations
...

That's good...you don't want to do that, anyway. For why and how to
accomplish the task, see 4.6 in the Matlab FAQ Wiki...

<http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F>

--