Description
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>.
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CRAN Check Status
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Show all 14 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-macos-arm64 | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (2 non-OK)
NOTE
r-devel-linux-x86_64-debian-clang
CRAN incoming feasibility
Maintainer: ‘Michael Friendly <friendly@yorku.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Georges",
family = "Monette",
role = "aut"),
person(given = "Michael",
family = "Friendly",
role = c("aut", "cre"),
email = "friendly@yorku.ca"))
as necessary.
NOTE
r-devel-linux-x86_64-debian-gcc
CRAN incoming feasibility
Maintainer: ‘Michael Friendly <friendly@yorku.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Georges",
family = "Monette",
role = "aut"),
person(given = "Michael",
family = "Friendly",
role = c("aut", "cre"),
email = "friendly@yorku.ca"))
as necessary.
Check History
NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE
r-devel-linux-x86_64-debian-clang
CRAN incoming feasibility
Maintainer: ‘Michael Friendly <friendly@yorku.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Georges",
family = "Monette",
role = "aut"),
person(given = "Michael",
family = "Friendly",
role = c("aut", "cre"),
email = "friendly@yorku.ca"))
as necessary.
NOTE
r-devel-linux-x86_64-debian-gcc
CRAN incoming feasibility
Maintainer: ‘Michael Friendly <friendly@yorku.ca>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Georges",
family = "Monette",
role = "aut"),
person(given = "Michael",
family = "Friendly",
role = c("aut", "cre"),
email = "friendly@yorku.ca"))
as necessary.