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Rpcop: Principal Curves of Oriented Points

Principal curves generalize the notion of a first principal component to the case in which it is a nonlinear smooth curve. This package provides a function pcop(X) to compute principal curves with the algorithm defined in Delicado (2001) <doi:10.1006/jmva.2000.1917> from a data matrix X.

Version: 1.2.3
Depends: R (≥ 3.5.0)
Imports: Rcpp (≥ 1.0.7), princurve
LinkingTo: Rcpp
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-06-24
DOI: 10.32614/CRAN.package.Rpcop
Author: Pedro Delicado [aut] (Original C++ author), Mario Huerta [aut] (Original C++ author), Kevin Michael Frick [trl, aut, cre] (Modern C++ fixes and Rcpp port, with permission from the original authors), Stephen L. Moshier [cph] (Author of eigens() for symmetric matrix eigendecomposition)
Maintainer: Kevin Michael Frick <kmfrick at proton.me>
BugReports: https://github.com/kmfrick/Rpcop/issues
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
URL: https://github.com/kmfrick/Rpcop
NeedsCompilation: yes
Citation: Rpcop citation info
Materials: README, NEWS
CRAN checks: Rpcop results

Documentation:

Reference manual: Rpcop.html , Rpcop.pdf
Vignettes: Principal Curves of Oriented Points (source, R code)

Downloads:

Package source: Rpcop_1.2.3.tar.gz
Windows binaries: r-devel: not available, r-release: Rpcop_1.2.3.zip, r-oldrel: not available
macOS binaries: r-release (arm64): Rpcop_1.2.3.tgz, r-oldrel (arm64): Rpcop_1.2.3.tgz, r-release (x86_64): Rpcop_1.2.3.tgz, r-oldrel (x86_64): Rpcop_1.2.3.tgz
Old sources: Rpcop archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=Rpcop to link to this page.

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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