MATLAB: Save data in for loops

for loopsave data

Hi everyone,
I am trying to save my data into a matrix, each time two columns as X and Y.
but the codes don't work.
Can anyone explain and help?
Thanks a lot.
coordinate= zeros();
for a=1:21
Z=[X Y];
X = snakes{1,a}.x;
Y = snakes{1,a}.y;
coordinate((a),:)= Z;
end

Best Answer

Yes, You are trying to assign 2 matrices of different size. Try this:
coordinate= zeros(41,1);
for a=1:21
    X = snakes{1,a}.x;
    Y = snakes{1,a}.y;
    % Z=[X Y];
    if a == 1
        coordinate(:,end)= X;
        coordinate(:,end+1) = Y;
    else
        coordinate(:,end+1)= X;
        coordinate(:,end+1) = Y;
    end
end
coordinate size will be 41x42. For each a, we have 41x2 which means for 21 a's it will be 41x42.
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