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"
Hello!
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
http://www.burns-stat.com/pages/Tutor/R_inferno.pdf
HTH,
Albin
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| Etrichstrasse 26, A-5020 Salzburg
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