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alphahull (version 2.3)

Generalization of the Convex Hull of a Sample of Points in the Plane

Description

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.

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Version

Install

install.packages('alphahull')

Monthly Downloads

1,760

Version

2.3

License

file LICENSE

Maintainer

Beatriz PateiroLopez

Last Published

March 7th, 2022

Functions in alphahull (2.3)

anglesArc

Angles of the extremes of an arc
alphahull-package

Generalization of the Convex Hull of a Sample of Points in the Plane
areaahull

Area of the alpha-convex hull
arc

Add an arc to a plot
complement

Complement of the alpha-convex hull
delvor

Delaunay triangulation and Voronoi diagram
ahull

alpha-convex hull calculation
ahull_track

alpha-convex hull calculation of tracking data
rkoch

Random generation on a Koch snowflake curve
plot.delvor

Plot the Voronoi diagram and Delaunay traingulation
plot.ashape

Plot the alpha-shape
rotation

Clockwise rotation
tricircum

Returns the circumcentres of a Delaunay triangulation
plot.ahull

Plot the alpha-convex hull
lengthahull

Length of the boundary of the alpha-convex hull
inter

Intersection of two circumferences
koch

Construct a Kock snowflake curve
areaahulleval

Area of the alpha-convex hull
dw

Devroye-Wise estimator
dummycoor

Semi-infinite edge of the Voronoi diagram
ashape

alpha-shape calculation
dw_track

RBM-sausage calculation of tracking data
inahull

Determines for one or more points whether they belong to the alpha-convex hull