sum a column per row with loops

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ahmad
ahmad on 3 Aug 2022
Edited: DGM on 3 Aug 2022
let say i have a 10x10 matrix of ones
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1
how can i sum every column of the matrix, per rows like this
1 = 2 = 3 ...
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
and so on?

Accepted Answer

DGM
DGM on 3 Aug 2022
Edited: DGM on 3 Aug 2022
I'm going to assume you mean to do a cumulative sum of rows:
A = ones(5) % a smaller example
A = 5×5
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
B = cumsum(A,2)
B = 5×5
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

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