MATLAB: Mean of matrix by columns

mean column

Hello! I'm looking for a function to get the mean of two (or more) columns:
 A = 1     2     3
     4     5     6
     7     8     9
 f(A) = 
    1.5000    2.5000
    4.5000    5.5000
    7.5000    8.5000
How can I do that in a simple way, for a generic matrix? Thank you.

Best Answer

conv2(A,[.5 .5],'valid')
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