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.
Stephanie Cooke <cooke.stephanie <at> gmail.com> writes:> > 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. > >Stephanie, See ?polygon() or maybe ?segments(). I'm not familar with phylogenetic tree plots, so this might not work. You might have to play around with different values until you find the range of the axes. Good luck.
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.snow at imail.org 801.408.8111> -----Original Message----- > From: r-help-bounces at r-project.org [mailto:r-help-bounces at r- > project.org] On Behalf Of Stephanie Cooke > Sent: Friday, January 27, 2012 1:03 AM > To: r-help at 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 at 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.