[R] mean

[Mark Myatt]

luca laghi <llaghi at foodsci.unibo.it> writes:
>
> 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?
>Thank you,
>Luca

Try:

        apply(mat, 2, mean)

The '2' indicates columns. You can specify arguments to the applied
function ...

        apply(mat, 2, mean, na.rm = TRUE)

I hope that helps.

Mark

--
Mark Myatt


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