Oh hey Jan, sorry, I just saw I did not read correctly and mistook your quote of Don's mail as a signature. So thank's to you for the second posting
Bernhard -- View this message in context: http://r.789695.n4.nabble.com/Loop-over-several-variables-tp4648112p4648132.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.