Thread Subject: matrix

Hi
I obtained the matrix A using a lot of calcultation in the for,
for i=1:N
    for j=1:N
        for k=1:N
          (I did a lot of calcultation ,so I obtained the matrix A )
                A
      end
   end
end

Main problem;
for every each step I want to see A matrix. For example
i=1 j=1,k=1 what is A?
i=1,j=1,k=2, A=?
i=N j=N k=N A=?

I tried B(i,j,k)=A,but matlab gives error....
How can I seperate A matrix for each step?

thanks.....

"Handan Yaslan" <hyaslan.nospam@mathworks.com> wrote in message
news:hcs07k$kd7$1@fred.mathworks.com...
> Hi
> I obtained the matrix A using a lot of calcultation in the for,
> for i=1:N
> for j=1:N
> for k=1:N
> (I did a lot of calcultation ,so I obtained the matrix A )
> A
> end
> end
> end
>
> Main problem;
> for every each step I want to see A matrix. For example
> i=1 j=1,k=1 what is A?
> i=1,j=1,k=2, A=?
> i=N j=N k=N A=?
>
> I tried B(i,j,k)=A,but matlab gives error....
> How can I seperate A matrix for each step?

The easiest way to do this is probably with a cell array:

C = cell(N,N,N);
% start the FOR loops
    % obtain A
    C{i, j, k} = A;
% end the FOR loops

C{2,3,4} % is A for i = 2, j = 3, k = 4.

--
Steve Lord
slord@mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ

Hi!

I think your matrix has a different size for each (i,j,k), so you can use a cell array:
B{i,j,k} = A

(note the {} in stead of () ).

Sebastiaan

"Handan Yaslan" <hyaslan.nospam@mathworks.com> wrote in message <hcs07k$kd7$1@fred.mathworks.com>...
> Hi
> I obtained the matrix A using a lot of calcultation in the for,
> for i=1:N
> for j=1:N
> for k=1:N
> (I did a lot of calcultation ,so I obtained the matrix A )
> A
> end
> end
> end
>
> Main problem;
> for every each step I want to see A matrix. For example
> i=1 j=1,k=1 what is A?
> i=1,j=1,k=2, A=?
> i=N j=N k=N A=?
>
> I tried B(i,j,k)=A,but matlab gives error....
> How can I seperate A matrix for each step?
>
> thanks.....

"Handan Yaslan" <hyaslan.nospam@mathworks.com> wrote in message <hcs07k$kd7$1@fred.mathworks.com>...
> Hi
> I obtained the matrix A using a lot of calcultation in the for,
> for i=1:N
> for j=1:N
> for k=1:N
> (I did a lot of calcultation ,so I obtained the matrix A )
> A
> end
> end
> end
>
> Main problem;
> for every each step I want to see A matrix. For example
> i=1 j=1,k=1 what is A?
> i=1,j=1,k=2, A=?
> i=N j=N k=N A=?
>
> I tried B(i,j,k)=A,but matlab gives error....
> How can I seperate A matrix for each step?
>
> thanks.....


thank you very much for your answers....
But now I have other problem. In my problem
for i=-N:N
   for j=-N:N
    for k=-N:N

C{i,j,k} is used for positive integer . I will try to solve this case...If you have some information would you write to me....

One way to do something like this is to mimic manually the integer loop indices.


cnt_ii = 1;
cnt_jj = 1;

for ii = -.5:.1:.5
    for jj = -.9:.1:.9
        G{cnt_ii,cnt_jj} = rand;
        cnt_jj = cnt_jj + 1;
    end
    cnt_ii = cnt_ii + 1;
    cnt_jj = 1;
end