Martin Maechler <[EMAIL PROTECTED]> writes:
> >> as.numeric (levels (y)[as.numeric (y)])
> NaLi> [1] 1 3 1
>
> NaLi> which is a bit awkward.
> as.numeric(as.character(y)) !
>
> {in some cases you might consider using as.integer() instead of as.numeric()}
Better to convert first and then index:
as.numeric(levels(y))[y]
The speed gain is only going to be visible on huge vectors, though.
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
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