dotsInPolys             Put dots in polygons
get.Pcent               Polygon centroids
gpcholes                Hisaji Ono's lake/hole problem
Map2poly                Create polygon lists and bounding boxes from
                        imported shapefiles
maptools                Report version information and changes
plot.Map                Plot a Map object
plot.polylist           Plot polygons
read.shape              Read shapefile into Map object
subset.polylist         Subset polygon list objects
symbolsInPolys          Place grids of points over polygons
write.linelistShape     Write a arc-type shapefile
write.pointShape        Write a point-type shapefile
write.polylistShape     Write a polygon-type shapefile
