MATLAB: Where is the mistake on cumulative sum of 4 matrices

cumsumsum

Hi everbody, I have 4 matrices and to find cumulative sum of them, i use this code:
%aa includes 4 matrices (4 line, 101 columns for each line)
    for i=1:1:4;
    cum_sum=cumsum(aa(i,:))
    end
MATLAB gives me one result with this code. How can i generate 4 result with using this code?
Thanks

Best Answer

My best guess, with the current information as I write this, is that you just need either
cum_sum = cumsum(aa)
or
cum_sum = cumsum(aa,2)
without using the for loop at all.
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