deldir                  Delaunay triangulation and Dirichlet
                        tessellation
plot.deldir             Plot objects produced by deldir
plot.tile.list          Plot Dirchlet (Voronoi) tiles
plot.triang.list        Plot Delaunay triangles
tile.centroids          Compute centroids of Dirchlet (Voronoi) tiles
tile.list               Create a list of tiles in a tessellation
triang.list             Create a list of Delaunay triangles
