Howdy all: I have a simple question. Given two sp objects, a SpatialGridDataFrame tdmean and SpatialLinesDataFrame states I want to plot tdmean as an image and draw the lines on top. Can this be done with sp?
> class(tdmean) [1] "SpatialGridDataFrame" attr(,"package") [1] "sp" > is.projected(tdmean) [1] TRUE > class(states) [1] "SpatialLinesDataFrame" attr(,"package") [1] "sp" > is.projected(states) [1] TRUE > # plot states and put the image on top: works but is unsatisfying > plot(states,axes=T) > image(tdmean["z"],add=T) > > # plot image and put the state lines on top: doesn't work > image(tdmean["z"],axes=T) > lines(states) > _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
