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how to find the sum of matrix?

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BANI tita
BANI tita 2012-10-17
hello, I have a loop as results of K = 1:19, a matrix A (k), my question is how to find the sum (M )of all matrix for each value of k, ie: find M = sum(A (k))

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回答（2 个）

Matt J
Matt J 2012-10-17
编辑：Matt J 2012-10-17
I'm assuming your matrices are the slices of a 3D array
M=A(:,:,k)
If so, just do
sum(A,3);
Sachin Ganjare
Sachin Ganjare 2012-10-17
If I understand your question correctly:
sum_of_all_matrices = sum(A)
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Sachin Ganjare
Sachin Ganjare 2012-10-17
For Example:
a1 = [1 2 3]; a2 = [1 2 3]; a3 = [1 2 3]; a123 = [a1 a2 a3]; sum_out = sum(a123);
sum_out is sum of elements of matrix

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