You could try the library mapplots, see example below: http://r.789695.n4.nabble.com/file/n4635091/xy.png -- View this message in context: http://r.789695.n4.nabble.com/Plotting-bar-graph-over-a-geographical-map-tp4346925p4635091.html Sent from the R help mailing list archive at Nabble.com.