matrix addition

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Jim O'Doherty
Jim O'Doherty 2011-11-28
All, I've got a 3-d matrix, sum_total(:,:,i) "i" is in a loop, and can be anything from 20 to 100, therefore making the length unknown until after the loop is finished.
Does anyone know how I might add all the matrices of the variable together to make a single matrix? I tried "cumsum" with no luck.
Jim

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Fangjun Jiang
Fangjun Jiang 2011-11-28
A=rand(3,4,5);
B=sum(A,3); % sum at the third dimension.

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