Hi, For the sake of completeness: just a few days ago I received a comment to a post about spplot and ggmap (http://procomun.wordpress.com/2013/04/24/stamen-maps-with-spplot/). There I was using a SpatialPointsDataFrame object. Because of that comment I posted another example with SpatialPolygonsDataFrame: https://gist.github.com/oscarperpinan/7482848
Best, Oscar. ----------------------------------------------------------------- Oscar Perpiñán Lamigueiro Grupo de Sistemas Fotovoltaicos (IES-UPM) Dpto. Ingeniería Eléctrica (ETSIDI-UPM) URL: http://oscarperpinan.github.io Twitter: @oscarperpinan 2013/11/20 Waichler, Scott R <scott.waich...@pnnl.gov>: > I was told, among other things, to look for previous messages by Oscar that > would explain how to do this. Here is Oscar's solution that I found to work > for the case where you want to plot two rasters that have different extents. > In my case, gmap is a satellite image obtained with RgoogleMaps, and z are > the results I want to plot over the background image. I made the alpha > values of z less than 1 so that the background image would show through. > > library(rasterVis) > levelplot(z~x*y) + > layer_(grid.raster(gmap, y=latCenter, width=width, height=height, > default.units='native')) > > Scott Waichler > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
