[Rd] Sticky levels (PR#846)
bwheeler@echip.com
bwheeler@echip.com
Tue, 13 Feb 2001 01:38:48 +0100 (MET)
This isn't actually a bug, but what is one to do
in cast of a typo?
> citizen<-factor(c("uk","as","no","au","uk","us","us"))
> levels(citizen)
[1] "as" "au" "no" "uk" "us"
> citizen[2]<-"us"
> citizen
[1] uk us no au uk us us
Levels: as au no uk us ** [STICKY "as"] **
> citizen[2]<-"gs"
Warning message:
invalid factor level, NAs generated in:
[<-.factor(*tmp*, 2, value = "gs")
--
Bob Wheeler --- (Reply to: bwheeler@echip.com)
ECHIP, Inc.
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