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alphahull (version 2.2)

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

2.2

License

file LICENSE

Maintainer

Beatriz PateiroLopez

Last Published

June 21st, 2019

Functions in alphahull (2.2)

dw_track

RBM-sausage calculation of tracking data
rotation

Clockwise rotation
plot.ahull

Plot the alpha-convex hull
rkoch

Random generation on a Koch snowflake curve
lengthahull

Length of the boundary of the alpha-convex hull
dw

Devroye-Wise estimator
ashape

alpha-shape calculation
dummycoor

Semi-infinite edge of the Voronoi diagram
inahull

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

Plot the Voronoi diagram and Delaunay traingulation
plot.ashape

Plot the alpha-shape
tricircum

Returns the circumcentres of a Delaunay triangulation
koch

Construct a Kock snowflake curve
inter

Intersection of two circumferences
areaahull

Area of the alpha-convex hull
anglesArc

Angles of the extremes of an arc
delvor

Delaunay triangulation and Voronoi diagram
ahull_track

alpha-convex hull calculation of tracking data
arc

Add an arc to a plot
complement

Complement of the alpha-convex hull
alphahull-package

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

alpha-convex hull calculation
areaahulleval

Area of the alpha-convex hull