[R-sig-Geo] spplot with two rasters

[Dylan Beaudette]

Hi,

Is it possible to plot two raster images using spplot() in a manner similar 
to:

pts <- list("sp.points", points_file, pch = 4, col = "black", cex=0.5)
spplot(raster_file, zcol="elev.pred", sp.layout=list(pts))

Note that one of the raster images is an aerial photo, used only for context, 
while the second one is one with interesting z-values. The second raster is 
masked and thus does not cover the entire region.

Thanks,

Dylan


-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341