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| deldir | Construct the Delaunay triangulation and the Dirichlet (Voronoi) tessellation of a planar point set. |
| plot.deldir | Produce a plot of the Delaunay triangulation and Dirichlet (Voronoi) tesselation of a planar point set, as constructed by the function deldir. |
| plot.tile.list | Plot Dirchlet/Voronoi tiles |
| plot.triang.list | Plot Delaunay triangles |
| tile.centroids | Compute centroids of Voronoi/Dirchlet tiles. |
| tile.list | Create a list of tiles in a tessellation. |
| triang.list | Produce a list of Delaunay triangles. |