Thanks a lot, Matt! I will have a look at the options you suggested.
Cheers, Mango -- ----------------------------------------- Never run for the bus. Never skip tea. ______________________________________________ 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.