On Fri, Dec 10, 2010 at 2:21 AM, mathijsdevaan <mathijsdev...@gmail.com> wrote: > > Hi, > > I have a dataset (CSV) with some counts of firms located around the globe. > Each count is assigned to the longitude and latitude of the specific > location. Now I want to plot these counts on a world map using dots (size of > dots represent the count). I have been unable to find any info on whether > this is possible and if so, how? Can you please help me? Thanks! >
Plotting points is trivial - plot(data$x,data$y,pch=19,cex=data$size) will do for a start. i'm guessing your real problem is when you say 'on a world map'. How detailed a world map do you need? There's an outline one in the 'maps' package, or you should be able to find a shapefile of the world on the web somewhere and use that via the rgdal package. Other options include making a KML file of your points and overlaying on google earth. Or getting google map tiles and overlaying on that.... Or exporting your data to a GIS format and doing the pretty map in something like Quantum GIS. What are you trying to do exactly? also, you might want to post to r-sig-geo Barry ______________________________________________ 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.
