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| alphahull-package | Generalization of the convex hull of a sample of points in the plane |
| ahull | alpha-convex hull calculation |
| anglesArc | Angles of the extremes of an arc |
| arc | Add an arc to a plot |
| ashape | alpha-shape hull calculation |
| complement | Complement of the alpha-convex hull |
| delvor | Delaunay triangulation and Voronoi diagram |
| dummycoor | Semi-infinite edge of the Voronoi diagram |
| inahull | Determine whether a point belongs to the alpha-convex hull |
| inter | Intersection of two circumferences |
| lengthahull | Length of the boundary of the alpha-convex hull |
| plot.ahull | Plot the alpha-convex hull |
| plot.ashape | Plot the alpha-shape |
| plot.delvor | Plot the Voronoi diagram and Delaunay traingulation |
| rotation | Clockwise rotation |
| tricircum | Returns the circumcentres of a Delaunay triangulation |