[英]How do I find the sum of every X rows in a matrix in Matlab
I have a 189 x 4914 matrix and am trying to find the sum of each row in each 1x26 sub-matrix.我有一个 189 x 4914 的矩阵,我试图找到每个 1x26 子矩阵中每一行的总和。 How would I go about this?
我该怎么办?
Many thanks.非常感谢。
Try this:尝试这个:
n = 26;
result = reshape(sum(reshape(x.', n, []), 1), [], size(x, 1)).';
You can look at intermediate results to see how this works: reshape(x.', n, [])
, then sum(reshape(x.', n, []), 1)
etc您可以查看中间结果以了解其工作原理:
reshape(x.', n, [])
,然后sum(reshape(x.', n, []), 1)
等
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