How to do summation columnwise and create the structure array of summed values.

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AS 2022-6-6

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回答： KSSV 2022-6-6

I have matrix with dimension 1125 * 1128. I want to do summation of every 141 columns and so on. Then store the output in data structure array. Like that there will 8 suumed out in structure array.

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Answer 1

KSSV 2022-6-6

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You can achieve it by using reshape and sum.

First, reshape your matrix into a 3D matrix and then apply/ do what you want.

R = 1125;          % Number of rows
C = 1128;          % Number of columns
newC = 141;       % New number of rows
A = randi(10, [R C]);  % 1125x1128 array of random integers
B = reshape(A, [R newC C/newC]);