multi dimensional array and the mean function

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Rica
Rica 2012-11-19
Hi!
How to apply the mean function on multidimenssional array?
% A=[1 2 3; 4 5 6]---> B=mean(A,2).
how to applay it on an array of the size 10*1*30?
Thnk you

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回答（2 个）

Rica
Rica 2012-11-19
I found the solution.
First squeeze and then apply the mean function
Jan
Jan 2012-11-19
There is no need to squeeze:
B = mean(A, 3)
The result is [10 x 1], because trailing singleton dimensions are reduced automatically, e.g. [10 x 1 x 1] gets [10 x 1] without calling squeeze.
Try size(zeros(10, 1, 1)).

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