If you are willing to use base graphics instead of ggplot2 graphs, then look at the subplot function in the TeachingDemos package. One of the examples there shows adding multiple small bar graphs to a map.
-- 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 sjlabrie > Sent: Tuesday, January 31, 2012 9:53 PM > To: r-help@r-project.org > Subject: [R] Plotting bar graph over a geographical map > > Hi, > > I am looking for a way to plot bar on a map instead of the standard > points. > I have been using ggplot2 and maps libraries. > The points are added with the function geom_point. I know that there is > a > function > geom_bar but I can't figure out how to use it. > > Thank you for your help, > > Simon > > ### R-code > library(ggplot2) > library(maps) > > measurements <- read.csv("all_podo.count.csv", header=T) > allworld <- map_data("world") > > pdf("map.pdf") > ggplot(measurements, aes(long, lat)) + > geom_polygon(data = allworld, aes(x = long, y = lat, group = group), > colour = "grey70", fill = "grey70") + > geom_point(aes(size = ref)) + > opts(axis.title.x = theme_blank(), > axis.title.y = theme_blank()) + > geom_bar(aes(y = normcount)) > dev.off() > ### > > > > > -- > View this message in context: http://r.789695.n4.nabble.com/Plotting- > bar-graph-over-a-geographical-map-tp4346925p4346925.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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.
