Hi Desmond, You might try
> sort(apply(expand.grid(v1, v2), 1, paste, collapse = "", sep = "")) [1] "a1" "a2" "a3" "b1" "b2" "b3" HTH, Jorge On Sat, Aug 27, 2011 at 12:54 PM, Campbell, Desmond <> wrote: > Dear R-help readers, > > I'm sure this problem has been answered but I can't find the solution. > > I have two vectors > v1 <- c("a","b") > v2 <- c(1,2,3) > I want an easy way to produce every possible combination of v1, v2 elements > Ie I want to produce > c("a1","a2","a3", "b1","b2","b3") > > regards > Desmond > > Desmond Campbell > Dept of Biostatistics and Computing, Institute of Psychiatry (KCL), > PO Box 20, De Crespigny Park, Denmark Hill London, SE5 8AF > > Tel 020 7848 0309 > Email d.campb...@iop.kcl.ac.uk<mailto:d.campb...@iop.kcl.ac.uk> > > > > [[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. > [[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.