Package: ridgetorus
Type: Package
Title: PCA on the Torus via Density Ridges
Version: 1.1.1
Date: 2026-07-25
Authors@R: c(
    person(given = "Eduardo", family = "García-Portugués",
           role = c("aut", "cre"), email = "edgarcia@est-econ.uc3m.es",
           comment = c(ORCID = "0000-0002-9224-4111")),
    person(given = "Arturo", family = "Prieto-Tirado", role = "aut",
    comment = c(ORCID = "0000-0003-0193-2988"))
    )
Description: Implementation of a Principal Component Analysis (PCA) in
        the torus via density ridge estimation. The main function,
        ridge_pca(), obtains the relevant density ridge for bivariate
        sine von Mises and bivariate wrapped Cauchy distribution models
        and provides the associated scores and variance decomposition.
        Auxiliary functions for evaluating, fitting, and sampling these
        models are also provided. The package provides replicability to
        García-Portugués and Prieto-Tirado (2023)
        <doi:10.1007/s11222-023-10273-9>.
License: GPL-3
LazyData: true
Depends: R (>= 3.5.0), Rcpp
Imports: rootSolve, sdetorus, sphunif, circular
Suggests: BAMBI, covr, DirStats, GGally, ggplot2, knitr, markdown,
        mvtnorm, numDeriv, rmarkdown, testthat, viridisLite
LinkingTo: Rcpp, RcppArmadillo
URL: https://github.com/egarpor/ridgetorus
BugReports: https://github.com/egarpor/ridgetorus/issues
Encoding: UTF-8
RoxygenNote: 7.3.3
VignetteBuilder: knitr
Config/testthat/edition: 3
Config/pak/sysreqs: libgsl0-dev
Repository: https://egarpor.r-universe.dev
Date/Publication: 2026-07-25 18:03:25 UTC
RemoteUrl: https://github.com/egarpor/ridgetorus
RemoteRef: HEAD
RemoteSha: 36f7df145fb2e1c006103bfa1f43adc694aa67fc
NeedsCompilation: yes
Packaged: 2026-10-06 11:15:02 UTC; root
Author: Eduardo García-Portugués [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-9224-4111>),
  Arturo Prieto-Tirado [aut] (ORCID:
    <https://orcid.org/0000-0003-0193-2988>)
Maintainer: Eduardo García-Portugués <edgarcia@est-econ.uc3m.es>