Yogesh K. Tiwari wrote: > Hi, > > If I am ploting a world map like > > plot (lon,lat) > > then how to draw a continent boundry in that > plot. > > What is the command... See, e.g., the packages "maps, "mapdata", and "mapproj" as well as the task view "Spatial" on CRAN. Uwe Ligges > > Many thanks > > Regards, > Yogesh