Albert-Jan Roskam <fomcl <at> yahoo.com> writes: > > Hi, > > I am using maptools to plot air quality data on a map. Each measurement point is mapped to a postal code area. > This yields pictures with discrete borders, like so: > http://dl.dropbox.com/u/27415200/baincome.png > The problem is that the size of a postal code area doesn't mean much in this context. Moreover, only a small > minority of all the postal code areas has a measurement sation. Are there any ways/tools to "interpolate" > the various (strategically chosen) measurement stations? I am looking for sensible ways to create plots > like this:
Have you looked at the section on geostatistics and interpolation on the "Spatial" task view on CRAN: http://cran.r-project.org/web/views/Spatial.html You may also find the R-sig-geo list more appropriate. Hope this helps, Roger > > http://matplotlib.github.com/basemap/_images/etopo5.png > ______________________________________________ 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.
