I just figured that out, but the real data I'm using is a data frame for sure, so I'll find another example. -- View this message in context: http://r.789695.n4.nabble.com/Unique-subsetting-question-tp2550453p2550736.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.