David and Sarah,
Both suggestions work beautifully. Thanks!
Bonnie
> CC: r-help@r-project.org
> From: dwinsem...@comcast.net
> To: bby2...@columbia.edu
> Subject: Re: [R] how to find unique pairs of variables?
> Date: Thu, 15 Sep 2011 12:41:03 -0400
>
>
> On 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?
>
> ?duplicated
>
> dfrm[ !duplicated(dfrm), ]
>
> # Would give the unique pairs.
>
> --
> David Winsemius, MD
> West Hartford, CT
>
[[alternative HTML version deleted]]
______________________________________________
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.
