All good points. -- Bert
On Mon, Sep 3, 2012 at 12:07 PM, Greg Snow <538...@gmail.com> wrote: > I would be very surprised if the x value from locator matched the x > value in the data to the precision needed by ==, and what if 2 points > have the same x-value but different y-values, you would need to also > check the y's. With appropriate rounding this would work, but would > just be reinventing the identify function (as Peter pointed out). > > So if you are happy to reinvent wheels for learning purposes then > locator, which, and rounding (or min) could teach a lot. If the > simplest most straight forward solution is sought, then use identify > instead of locator. > > On Fri, Aug 31, 2012 at 5:03 PM, Bert Gunter <gunter.ber...@gene.com> > wrote: > > ?which ## > > as in ix <- which(x==values) > > > > -- Bert > > > > On Fri, Aug 31, 2012 at 2:09 PM, Michael <comtech....@gmail.com> wrote: > > > >> Hi all, > >> > >> I am using "locator" to select the points from a scatter plot... > >> > >> This is all fine. > >> > >> But the problem is that the locator only returns the axis values of the > >> selected points. > >> > >> Instead, I would like to get the index of these select points... > >> > >> The axis values are real-values so it's a bit hard for me to directly > >> reverse-engineer the index nubmers.. > >> > >> How to do that? > >> > >> Thank you! > >> > >> [[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. > >> > > > > > > > > -- > > > > Bert Gunter > > Genentech Nonclinical Biostatistics > > > > Internal Contact Info: > > Phone: 467-7374 > > Website: > > > http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm > > > > [[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. > > > > -- > Gregory (Greg) L. Snow Ph.D. > 538...@gmail.com > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm [[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.
