deldir                  Delaunay triangulation and Dirichlet
                        tessellation
divchain                Dividing chain; generic.
divchain.default        Dividing chain; default method.
divchain.deldir         Dividing chain; "deldir" method.
duplicatedxy            Determine duplicated points.
plot.deldir             Plot objects produced by deldir
plot.divchain           Plot a dividing chain.
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
tilePerim               Calculate tile perimeters.
triMat                  Produce matrix of triangle vertex indices.
triang.list             Create a list of Delaunay triangles
