On Fri, Aug 20, 2010 at 9:27 AM, Cecilia Carmo <cecilia.ca...@ua.pt> wrote: > It wasn't the merge command. It doesn't create the variable x3. > > Cecília > >
How about: x$k3 <- with(x, unlist(tapply(k1, k1, seq_along))) y$k3 <- with(y, unlist(tapply(k1, k1, seq_along))) ______________________________________________ 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.
