creating a nested loop to change values within a for loop

Hi,

here is a code segment I am working on

n = 132 ;
M = cell(n,1); 
for n = 1:132 
    for i = 1:132 
        for j = 1:49
            if j~=2
                [R P] = corrcoef(young_50(n,:,2),young_50(i,:,j))
                r(j,i) = R(1,2);
                p(j,i) = P(1,2);
            end
        end
    end
    M{n} = r; 
    M{n}(2,:) = []
end

what I need to do is change "if j~=2" to 3, 4,5...until 49, and also change young_50(n,:,2) similiarly. I then need to save M as M3, M4... to represent that particular output.

How can I go about doing that?

[Stephen23]

" I then need to save M as M3, M4... to represent that particular output."

Using numbered variables is a sign that you are doing something wrong in your code. You should use indexing instead.

Answer 1

[Yasasvi Harish Kumar]

Hi,

I think something like this should help. I am not too sure if I understood your question right, please let me know if you wanted something else.

n = 132 ;
M = cell(n,42); 
for n = 1:132 
    for z = 2:49 
        for i = 1:132
            for j = 1:49
                if j~=z
                [R P] = corrcoef(young_50(n,:,z),young_50(i,:,j))
                r(j,i) = R(1,z);
                p(j,i) = P(1,z);
                end
            end
        end
    M(n,z) = r; 
    M(n,z)(2,:) = [] % not sure what you are trying to do with this but the syntax is incorrect
    end
end

Regards

Answer 2

[Andrei Bobrov]

[ii,k,jj] = size(young_50);
yy = permute(young_50,[2,3,1]);
y1 = reshape(yy(:,[1,3:end],:),k,[]);
b = squeeze(yy(:,2,:));
p = corr(y1,b);
M_array3D = reshape(p,jj-1,[],ii);