[R] apply function to named numeric object

[David Winsemius]

On Aug 3, 2009, at 9:07 AM, Paulo Eduardo Cardoso wrote:

> Maybe a very basic question.
> How can I get mean of a object like this
>
>> str(object)
> num [1:53, 1:2] 734 734 736 734 736 ...
> - attr(*, "dimnames")=List of 2
>  ..$ : NULL
>  ..$ : chr [1:2] "x" "y"
>
> I want the mean of both x and y

apply(object, 2, mean)

or...

colMeans(object)  # which will be faster


> _______________
> Paulo E. Cardoso
>
> 	[[alternative HTML version deleted]]
>
> __________________________________________

David Winsemius, MD
Heritage Laboratories
West Hartford, CT