If I have a 2000 x 130 matrix, how do I convert it to a 500 x 130 matrix by adding all four rows together by using Matlab loop

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Haytham Ali
Haytham Ali 2022-1-12
评论： KSSV 2022-1-12
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KSSV
KSSV 2022-1-12
编辑：KSSV 2022-1-12
A = rand(2000,130) ;
[r,c] = size(A);
nlay = r/4;
B = permute(reshape(A',[c,r/nlay,nlay]),[2,1,3]);
iwant = reshape(sum(B),[],c) ;
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Haytham Ali
Haytham Ali 2022-1-12
@KSSV thank you
Can you tell me how to sum all 4 elements or rows
Since I want to calculate the average for each of the four elements by calculating their sum divided by their number

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