[R] Question on Counting Factors - PS

[S Ellison]

> -----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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