means of the 3rd dimension of a matrix

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Asl
Asl 2013-10-21
评论： Walter Roberson 2013-10-21
AA = rand(3) I want a 2d matrix BB containing means of 3rd dimension of matrix A How I can do this smartly? Thanks
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Asl
Asl 2013-10-21
编辑：Asl 2013-10-21
such a martix I want BB = [
mean(a(1,1,:) mean(a(1,2,:) ; mean(a(2,1,:) mean(a(2,2,:)
]

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Walter Roberson
Walter Roberson 2013-10-21
BB = mean(A, 3);
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Asl
Asl 2013-10-21
BB = mean(A, 3); works but BB = std(A, 3); does not work any idea=
Walter Roberson
Walter Roberson 2013-10-21
std(A,0,3)
As could be determined by looking at the documentation for std()

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