Of course...
Thanks
-Don
--
Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062
Lab cell 925-724-7509
On 5/11/18, 3:50 PM, "R-help on behalf of peter dalgaard"
<r-help-boun...@r-project.org on behalf of pda...@gmail.com> wrote:
Um, maybe just
dat1$C <- match(dat1$B, unique(dat1$B))
Indexing 1:k with numbers between 1 and k is a bit of a no-op...
AFAICT, this even works without stringsAsFactors=FALSE
-pd
> On 11 May 2018, at 21:30 , MacQueen, Don <macque...@llnl.gov> wrote:
>
> dat1$C <- seq(length(unique(dat1$B)))[ match( dat1$B, unique(dat1$B) )]
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk Priv: pda...@gmail.com
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