Implementation of the 3D Alpha-Shape for the Reconstruction of 3D Sets from a Point Cloud R package alphashape3d version 1.3.3 Implementation in R of the alpha-shape of a finite set of points in the three-dimensional space. The alpha-shape 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, this package 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 Imports: RANN Suggests: alphahull Beatriz Pateiro-López <beatriz.pateiro@usc.es> Comprehensive R Archive Network (CRAN) Beatriz Pateiro-López [aut, cre], Thomas Lafarge [aut] GPL-2 2025-10-10 application/tgz https://CRAN.R-project.org/package=alphashape3d doi:10.32614/CRAN.package.alphashape3d