Some problem in taking values from particular text file

I have a matrix A 965*365 want to make from this matrix a matrix Z such that it is having only three rows such that in 1st row value of A(:,1), A(:,4), A(:,7) and so on and in second row value of A(:,2), A(:,5) and so on and in third row value of A(:,3), A(:,6) and so on

    Z=[];n=1;
    for i=1:4:3864
    Z(n:n+965,1)=A(:,i+2);
    Z(n:n+965,2)=A(:,i+3);
    Z(n:n+965,3)=A(:,i);
    n=n+965;
    end

Subscripted assignment dimension mismatch.

Plz tell me how can I solve it?

Answer 1

[Azzi Abdelmalek]

A1=A(:,1:3:end);
A2=A(:,2:3:end);
A3=A(:,3:3:end);
out=[A1(:) A2(:) A3(:)]'

[Image Analyst]

Because Azzi wrote code for exactly what you said, but you are not saying what you want. Please describe what you want accurately next time.

Answer 2

[per isakson]

Is this what you intended?

    function Z = cssm
        A = randi( 12, [965,365] );
        Z=[];
        n=1;
        N_end = 964;
        for i=1:4:364
            Z(n:n+N_end,1)=A(:,i+2);
            Z(n:n+N_end,2)=A(:,i+3);
            Z(n:n+N_end,3)=A(:,i);
            n=n+N_end + 1;
        end
    end

Anyhow, it returns a result.

.

Here are some links on debugging in Matlab

• Debugging in MATLAB
• Debugging session
• Debugging Approaches