Code running multiple times for different elements of a matrix

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Andreas S
Andreas S 2020-10-9
评论： Matt J 2020-10-10
Hi everyone. I need some help to code this problem:
The data is 480x10 matrix(ret). I want to calculate the mean of each column from the past 120 elements of the same column
m1=mean(ret(1:120,1:10))
m2=mean(ret(2:121,1:10))
...
m360=mean(ret(360:480,1:10))
How can i do it with a loop and receive the results in a matrix 360x10.

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Matt J
Matt J 2020-10-9
编辑：Matt J 2020-10-9
m=conv2(ret,ones(120,1)/120,'valid')

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