On Thu, 26 Aug 2010, dkod wrote:
Roger Could you give me a hint on how I can add a landform background to my grid plot? How do I use the maps packages' world coordinates to show the landforms.
See map2SpatialLines() in maptools, work out whether to transform, or at least to assign the correct CRS. Note that image.plot() - if you are still using that function - does not stretch the Northings (y-axis), so if you are away from the Equator, your output will look flattened. Plotting functions in the sp and maps packages do stretch when the data are known to be in geographical coordinates.
Roger
Thanks again Kelly O'Day
-- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: [email protected] _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
