Another solution factor(port1[,2], labels=levels(stocks[,2]))
----- A R learner. -- View this message in context: http://r.789695.n4.nabble.com/mixing-strings-and-numeric-doubles-in-an-array-tp2312091p2312313.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.