On Thu, Jun 05, 2008 at 09:05:25AM +0200, Philipp Pagel wrote:
> a bad idea. Alternatively, this should work:
>
> foo$id <- cumsum(as.logical(diff(foo$id))) + 1
I should have explicitly said that this only works after sorting, of
course.
cu
Philipp
--
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany
http://mips.gsf.de/staff/pagel
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