On Monday 13 October 2008, Waichler, Scott R wrote: > I would like to use a map or aerial photo as a background to plotting > solid lines and text, and semi-transparent color contours, in base and > lattice graphics. Plot coordinates need to be consistent with the > georeferenced background. For example, a color contour plot would have > an gray-toned aerial photograph as a background for overprinted > semi-transparent color contours of some spatially dependent variable. > Can anyone point me in the right direction on how to do this? > > Thanks, > Scott Waichler > Pacific Northwest National Laboratory > [EMAIL PROTECTED] >
See spplot() and associated examples of how to use 'sp' class objects. Here is one worked exampled with sp objects: http://casoilresource.lawr.ucdavis.edu/drupal/node/442 -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 ______________________________________________ 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.
