Ok, stupid question. is.factor is the solution.
Thanks! -- View this message in context: http://r.789695.n4.nabble.com/Type-of-variable-tp4710395p4710396.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
