Implementation of the 3D alpha-shape for the reconstruction of 3D sets from a point cloud The package alphashape3d presents the implementation in R of the alpha-shape of a finite set of points in the three-dimensional space. This geometric structure generalizes the convex hull and allows to recover the shape of non-convex and even non-connected sets in 3D, given a random sample of points taken into it. Besides the computation of the alpha-shape, the package alphashape3d provides users with functions to compute the volume of the alpha-shape, identify the connected components and facilitate the three-dimensional graphical visualization of the estimated set. Software Depends: geometry, rgl Thomas Lafarge <thomas.lafarge@nist.gov>, Beatriz Pateiro-Lopez <beatriz.pateiro@usc.es> Thomas Lafarge, Beatriz Pateiro-Lopez GPL-2 2012-01-14 application/tgz http://CRAN.R-project.org/package=alphashape3d