[R] Remove levels

Albin Blaschka albin.blaschka at standortsanalyse.net
Thu Jun 13 14:11:42 CEST 2013

Am 13.06.2013 14:02, schrieb Shane Carey:
> I have a dataframe consisting of factors in one column. Im trying to remove
> certain levels using the following code:
> toBeRemoved1<-which(DATA$UnitName_1=="lake")
> DATA<-DATA[-toBeRemoved1,]
> However it will not remove the level "lake"


Is this a part of the R Inferno?
See "The R Inferno" from Patrick Burns, specially Chapter 8.2.4 
"dropping factor levels ", page 83



| Albin Blaschka, Mag.rer.nat.
| Etrichstrasse 26, A-5020 Salzburg
| * www.albinblaschka.info * www.thinkanimal.info *
| - It's hard to live in the mountains, hard but not hopeless!

More information about the R-help mailing list