Generalization of the Convex Hull of a Sample of Points in the Plane R package alphahull version 2.5 Computation of the alpha-shape and alpha-convex hull of a given sample of points in the plane. The concepts of alpha-shape and alpha-convex hull generalize the definition of the convex hull of a finite set of points. The programming is based on the duality between the Voronoi diagram and Delaunay triangulation. The package also includes a function that returns the Delaunay mesh of a given sample of points and its dual Voronoi diagram in one single object. Software Imports: ggplot2, interp, R.utils, sgeostat, spatstat.geom, spatstat.random, splancs Beatriz Pateiro-Lopez <beatriz.pateiro@usc.es> Comprehensive R Archive Network (CRAN) Beatriz Pateiro-Lopez [aut, cre], Alberto Rodriguez-Casal, [aut]. GPL-2 GPL-3 2022-06-16 application/tgz https://CRAN.R-project.org/package=alphahull doi:10.32614/CRAN.package.alphahull