Hi Bonnie, ?unique probably would have done the trick for you. But here's an example: > z <- data.frame(x = rep(1:5, each=2), y = rep(1:2, each=5)) > z x y 1 1 1 2 1 1 3 2 1 4 2 1 5 3 1 6 3 2 7 4 2 8 4 2 9 5 2 10 5 2 > unique(z) x y 1 1 1 3 2 1 5 3 1 6 3 2 7 4 2 9 5 2 > nrow(unique(z)) [1] 6
Sarah On Thu, Sep 15, 2011 at 12:27 PM, <bby2...@columbia.edu> wrote: > I have two variables, both numerical. I would like to find the unique values > of the pairs, in other words, unique coordinates if I were to plot them. > > I also need to know how many pairs there are, but I guess I can use length() > if I can somehow isolate the unique pairs first? > > Thanks a lot! > > Bonnie Yuan > > ______________________________________________ > 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. > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
