The locator() function can help you find coordinates of interest on an existing plot.
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Stephanie Cooke > Sent: Friday, January 27, 2012 1:03 AM > To: r-help@r-project.org > Subject: [R] Placing a Shaded Box on a Plot > > Hello, > > I would like to place shaded boxes on different areas of a > phylogenetic tree plot. Since I can not determine how to find axes on > the phylogenetic tree plot I am not able to place the box over certain > areas. Below is example code for the shaded box that I have tried to > use, and the first four values specify the position. > > rect(110, 400, 135, 450, col="grey", border="transparent") > > Any suggestions on how to place a shaded box to highlight certain > areas of a plot I would greatly appreciate. > > ______________________________________________ > 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. ______________________________________________ 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.