alphashape3d v1.3

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Implementation of the 3D Alpha-Shape for the Reconstruction of 3D Sets from a Point Cloud

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.

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alphashape3d

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:

License:

  • GPL-2

Functions in alphashape3d

Name Description
plot.ashape3d Plot the \(\alpha\)-shape in 3D
rtorus Generate points in the torus
components_ashape3d Connected subsets computation
inashape3d Test of the inside of an \(\alpha\)-shape
alphashape3d-package Computation of the 3D \(\alpha\)-shape
ashape3d 3D \(\alpha\)-shape computation
surfaceNormals Normal vectors computation
volume_ashape3d Volume computation
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Details

Date 2017-12-14
License GPL-2
LazyLoad yes
NeedsCompilation yes
RoxygenNote 6.0.1
Packaged 2017-12-21 12:37:08 UTC; beatriz
X-CRAN-Comment Archived on 2017-12-04 as errors in remaking vignette were not corrected despite reminders.
Repository CRAN
Date/Publication 2017-12-21 15:04:35 UTC

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