Hi!
> > tmpdata<-subset(myd, TYPE=="A")
> > levels(tmpdata$TYPE)
> > [1] "A" "B" "C"
>
> I'd like to get only "A" as output...
rebuild the factor after subsetting:
tmpdata$TYPE <- factor(tmp$TYPE)
If you want the levels of all factors in your data frame to be
adjusted you could also use:
tmpdata <- data.frame(as.matrix( subset(myd, TYPE=='A') ))
cu
Philipp
--
Dr. Philipp Pagel Tel. +49-89-3187-3675
Institute for Bioinformatics / MIPS Fax. +49-89-3187-3585
GSF - National Research Center for Environment and Health
Ingolstaedter Landstrasse 1
85764 Neuherberg, Germany
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