On Tue, May 11, 2010 at 9:07 PM, Jim Bouldin <jrboul...@ucdavis.edu> wrote: > > I'm trying to identify and remove rows in a data frame that are duplicated > only on particular columns within it (i.e. not on all columns).
This is probably the cleanest way: dat <- data.frame(x = c(1, 2, 3), y = c(1, 1, 3)) subset(dat, !duplicated(y)) See this thread (among others) for some other options: http://finzi.psych.upenn.edu/Rhelp10/2010-January/224658.html ______________________________________________ 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.
