[EMAIL PROTECTED] wrote on 23/01/2004 15:24:21:
>
> Hi all!
>
> How to retrieve the levels number of a factor object?
> See this code:
> groups<-gl(4,10)
> I want to retrieve the number of levels (4) of my object "groups"
> I tried groups.levels but this don't work
Is
length(levels(groups))
what you were looking for ?
HTH,
Tobias
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