alphahull v2.2

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

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.

Functions in alphahull

Name Description
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
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Vignettes of alphahull

Name
alphahull.rnw
biblioJSS.bib
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Details

Date 2019-06-19
License file LICENSE
NeedsCompilation yes
License_restricts_use yes
Packaged 2019-06-19 13:07:31 UTC; beatriz
Repository CRAN
Date/Publication 2019-06-21 17:30:03 UTC

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