Principal Curves of Oriented Points R package Rpcop version 1.2.3 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. Software Depends: R (>= 3.5.0) Imports: Rcpp (>= 1.0.7), princurve LinkingTo: Rcpp Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Kevin Michael Frick <kmfrick@proton.me> Comprehensive R Archive Network (CRAN) 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) GPL (>= 2) 2026-06-24 application/tgz https://CRAN.R-project.org/package=Rpcop doi:10.32614/CRAN.package.Rpcop