[R] order with NAs

[Thomas Lumley]

On Tue, 24 Sep 2002, Remigijus Lapinskas wrote:
>
> I want to rate Names by Score. However, NAs pop up to the
> upper rows when doing
>
> > data.frame(Rating=1:dim(test)[1],test[rev(order(test$Score)),])
>   Rating Name Score
> 4      1    d    NA
> 2      2    b    NA
> 5      3    e    10
> 1      4    a     7
> 3      5    c     5
>
> Is there an elegant way to place NAs in the lowest rows? And BTW how
> can I remove the first column of 4, 2, 5 etc?

If you look at the help page for order() you will find the option to put
NAs at the end.

	-thomas


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._