prinsurf: Principal Surface Contour Biplots

Fits principal surfaces, the two-dimensional generalisation of the principal curves of Hastie and Stuetzle (1989) <doi:10.1080/01621459.1989.10478797>, and displays them as biplots in which each variable is read off the contour lines of its fitted surface coordinate function. Sample predictivity, the proportion of a sample's squared length that is reconstructed by the fitted surface, is reported as a per-sample diagnostic of how well the surface represents the data.

Version:	2.0
Depends:	R (≥ 4.1.0)
Imports:	stats, graphics, grDevices
Suggests:	testthat (≥ 3.0.0), knitr, rmarkdown, biplotEZ
Published:	2026-09-09
DOI:	10.32614/CRAN.package.prinsurf
Author:	Raeesa Ganey [aut, cre, cph]
Maintainer:	Raeesa Ganey <raeesa.ganey at wits.ac.za>
BugReports:	https://github.com/RaeesaGaney91/prinsurf/issues
License:	MIT + file LICENSE
URL:	https://raeesaganey91.github.io/prinsurf/, https://github.com/RaeesaGaney91/prinsurf
NeedsCompilation:	no
Materials:	README, NEWS
CRAN checks:	prinsurf results

Documentation:

Reference manual:	prinsurf.html , prinsurf.pdf
Vignettes:	Principal-surface contour biplots (source, R code)

Downloads:

Package source:	prinsurf_2.0.tar.gz
Windows binaries:	r-devel: prinsurf_2.0.zip, r-release: prinsurf_2.0.zip, r-oldrel: prinsurf_2.0.zip
macOS binaries:	r-release (arm64): prinsurf_2.0.tgz, r-oldrel (arm64): prinsurf_2.0.tgz, r-release (x86_64): prinsurf_2.0.tgz, r-oldrel (x86_64): prinsurf_2.0.tgz
Old sources:	prinsurf archive

Linking:

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