[R] mean

[Achim Zeileis]

luca laghi wrote:
> 
>  Greetings,
> a little question:
> if I heve got a matrix with 10 columns, how do I produce a 10 elements
> vector with the average of each column?

with apply()
if x is your matrix

apply(x, 2, 'mean')

Best,
Achim

> Thank you,
> Luca
> 
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