[R] Dummy newbie question

[Uwe Ligges]

Julien Barnier wrote:
> 
> Hi,
> 
> Excuse me for a so dummy question, but I really can't manage to do this
> very simple thing : I have a data frame, and I would like to calculate
> two vectors which contain the sums respectively of the rows and of the
> columns of the matrix.
> 
> There is surely a very simple way to do that, but I didn't find it...

In  R <= 1.4.1:
 apply(x, 1, sum)
 apply(x, 2, sum)

In  R >= 1.5.0 (in development):
 colSums(x)
 rowSums(x)

Uwe Ligges
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._