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userlevel
2011 Feb 23
1
Easily switchable factor levels
...was wondering about ways to attach multiple sets of level codes
to a factor. It would work something like this:
> foo=multifactor(sample(letters,5),levels=letters,levelname="lower")
> foo
[1] m u i z b
Levels: a b c d ... y z
> levels(foo,"upper") = LETTERS
> uselevels(foo,"upper")
> foo
[1] M U I Z B
Levels: A B C D E F....Z
> uselevels(foo,"lower")
> foo
[1] m u i z b
Levels: a b c d ....z
In this way you could easily switch your levels from M and F to Male
and Female, or Hommes et Dames, without having to do levels(foo)...