How can I sum each 3 columns array?
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Hi, i want to sum each 3 columns of my array for any array dimension.
For example, Y array is the sum of each X array respectively to its color.
Need this to do sum for Nx150 array, so that it can turn into Nx50 array
Thanks!
采纳的回答
David Hill
2021-10-14
m=movsum(x,3);
y=m(:,1:3:end);
更多回答（1 个）
Walter Roberson
2021-10-15
reshape(x, size(x,1), 3, [])
now you can sum along the second dimension, and then reshape to remove the now-singular second dimension.
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