Thanks Greg, do you know where i can find the sate.center dataset that you mention?
On Tue, Feb 17, 2009 at 12:28 PM, Greg Snow <greg.s...@imail.org> wrote: > You need to give the symbols function the locations where you want the > centers of the circles to be. Some datesets with map information also have > centers of the states that you can use, for the USA, there is the > state.center dataset that may work for you, or the maptools package function > get.Pcent will compute a center for polygons (there are probably other > similar functions in other packages). > > For adding circles to a map of the USA, you may want to look at the > state.vbm data in the TeachingDemos package (works with maptools package), > but you will need to computer the centers of the polygons, they don't match > state.center or others. > > Hope this helps, > > -- > 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-boun...@r- > > project.org] On Behalf Of Alina Sheyman > > Sent: Tuesday, February 17, 2009 9:53 AM > > To: r-help@r-project.org > > Subject: [R] creating a map > > > > I'm trying to create a fairly basic map using R. What i want to get is > > the > > map of the country with circles representing a count of students in > > each > > state. > > What I've done so far is as following - > > map("state") > > > > symbols(data1$count,circles=log(data1$count)*3,fg=col,bg=col,add=T,inch > > es=F) > > > > this gives me the map of the country, but one that's not populated by > > my > > counts. > > Does anyone know what I'm doing wrong? > > > > Also, if anyone can recommend a good reference for creating maps in R, > > I'd > > really appreciate 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. > [[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.
