Hi there, I tried to add a coastline that is imported from a shapefile to a xyplot of sample points, but I got an error message.
> library(lattice) > library(maptools) > xyplot(mud$lat~mud$long, asp="iso", type="p", pch=1, cex=0.01, xlab="", ylab="") > > plot(coastline, add=T) Error in plot.xy(xy.coords(x, y), type = type, ...) : plot.new has not been called yet > I also tried using plot.new=TRUE in the xyplot and got the same message. I could get a plot from only using plot(coastline), but could not add it to the existing xyplot. Thanks in advance. Jin [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo