Hi Sarah, That I was making things too complicated doesn't surprise me. A skilled programmer makes everything look easy I think. And someone who is still learning does just the opposite.
Am going to spend some time now looking through your tweaks. Thank you very much for your help. Paul ______________________________________________ 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.
