> -----Original Message-----
> This would do it in your example:
>
> > levels(animals$V1) <- c("cat","tiger","dog","fish")
> > table(animals)
>
> cat tiger dog fish
> 2 2 0 0
But be very wary of
levels(animals$V2)<- c("cat","tiger","dog","fish")
table(animals$V2)
cat tiger dog fish
2 2 0 0 # !!
levels overwrites factor levels... factor(x, levels = ...) doesn't.
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