Try this: as.numeric(factor(y, levels = unique(y)))
On Sat, Mar 27, 2010 at 12:42 PM, sun <sun.sonn...@googlemail.com> wrote: > Dear all, > > I want to replace an (unsorted) id variable in a large dataset by a running > number without changing the order of the cases. > > E.g., > > y <- c(4,4,4,2,45,12,12) > > should be replaced by something like > > x <- c(1,1,1,2,3,4,4) > > Sorry for this simple question & thank you very much for your help! > > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
