I perhaps should have added that the etiquette of this list is to supply your correct name in your signature. This does not necessarily mean that you will be ignored if you fail to do so, but it does increase the likelihood that you will be.
Bert Gunter Genentech Nonclinical Biostatistics ______________________________________________ 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.