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gellipsoid: Generalized Ellipsoids

Represents generalized geometric ellipsoids with the "(U,D)" representation. It allows degenerate and/or unbounded ellipsoids, together with methods for linear and duality transformations, and for plotting. Thus ellipsoids are naturally extended to include lines, hyperplanes, points, cylinders, etc. This permits exploration of a variety to statistical issues that can be visualized using ellipsoids as discussed by Friendly, Fox & Monette (2013), Elliptical Insights: Understanding Statistical Methods Through Elliptical Geometry <doi:10.1214/12-STS402>.

Version: 0.7.3
Depends: rgl
Published: 2023-08-20
DOI: 10.32614/CRAN.package.gellipsoid
Author: Georges Monette [aut], Michael Friendly [aut, cre]
Maintainer: Michael Friendly <friendly at yorku.ca>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
URL: https://github.com/friendly/gellipsoid
NeedsCompilation: no
Language: en-US
Materials: README NEWS
CRAN checks: gellipsoid results

Documentation:

Reference manual: gellipsoid.pdf

Downloads:

Package source: gellipsoid_0.7.3.tar.gz
Windows binaries: r-devel: gellipsoid_0.7.3.zip, r-release: gellipsoid_0.7.3.zip, r-oldrel: gellipsoid_0.7.3.zip
macOS binaries: r-release (arm64): gellipsoid_0.7.3.tgz, r-oldrel (arm64): gellipsoid_0.7.3.tgz, r-release (x86_64): gellipsoid_0.7.3.tgz, r-oldrel (x86_64): gellipsoid_0.7.3.tgz
Old sources: gellipsoid archive

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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