On Tue, 7 Aug 2012, R. Michael Weylandt wrote:
Take a look at with()
Michael, Works like a charm! Thanks again for the pointer. Rich ______________________________________________ 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.