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.

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.

To install:

- the latest released version from CRAN:
`install.packages("alphashape3d")`

- the latest development version without vignette:
`install_github("alphashape3d","tlafarge",build_vignettes = FALSE)`

(require "devtools") - the latest development version:
`install_github("alphashape3d","tlafarge")`

(require "devtools")

Authors:

- Beatriz Pateiro-Lopez [email protected]
- Thomas Lafarge [email protected]

License:

- GPL-2