OT RE: US States percentage change plot
One package that you can use is Rcartogram from Omegahat, although it took me a long long time to figure out how to use it for real maps. I noticed there was another unpublished package named cart in R-Forge, and I have never tried it. I also want to know if there are other R packages that have as simple usage as "take the polygon coordinates and warp the polygons according to a variable". At least for Rcartogram, it is not so easy (due to the design of the C code by other authors). Maybe I'm going in a wrong direction (no cartogram algorithm is so straightforward?). Regards, Yihui -- Yihui Xie <xieyihui at gmail.com> Phone: 515-294-2465 Web: http://yihui.name Department of Statistics, Iowa State University 2215 Snedecor Hall, Ames, IA
On Thu, Oct 13, 2011 at 1:43 PM, Farley, Robert <FarleyR at metro.net> wrote:
OT question: can R produce Cartograms? Here's an example of World Population: http://www.worldmapper.org/display.php?selected=2 This might make Texas smaller and Rhode Island larger.... Robert Farley LACMTA -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Greg Snow Sent: Thursday, October 13, 2011 11:28 To: Michael Charles Bailey I; r-help at r-project.org Subject: Re: [R] US States percentage change plot Unless your audience is mainly interested in Texas and California and is completely content to ignore Rhode Island, then I would suggest that you look at the state.vbm map in the TeachingDemos package that works with the maptools package. ?The example there shows coloring based on a variable. -- 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 Michael Charles Bailey I Sent: Wednesday, October 12, 2011 6:46 PM To: r-help at r-project.org Subject: [R] US States percentage change plot Hi, I would like to make a plot of the US states (or lower 48) that are colored based upon a percentage change column. Ideally, it would gradually be more blue the larger the positive change, and more red the more negative is the change. The data I have looks like: ? ? ? ?State Percent.Change 1 ? ?Alabama ? ?0.004040547 2 ? ? Alaska ? -0.000202211 3 ? ?Arizona ? -0.002524567 4 ? Arkansas ? -0.008525333 5 California ? ?0.001828754 6 ? Colorado ? ?0.011116150 I have read help for the maps library and similar plots online but can't grasp how to map the percentage.change column to the map. thank in advance, Michael Bailey ? ? ? [[alternative HTML version deleted]]
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______________________________________________ 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. ______________________________________________ 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.