DirStats: Nonparametric Methods for Directional Data

Nonparametric kernel density estimation and bandwidth selection for directional data on the hypersphere S^q, q >= 1. Implements the kernel density estimator of Bai et al. (1988) <doi:10.1016/0047-259X(88)90113-3> in kde_dir(), the likelihood and least squares cross-validation bandwidth selectors of Hall et al. (1987) <doi:10.1093/biomet/74.4.751> in bw_dir_lcv() and bw_dir_lscv(), and the rule-of-thumb and plug-in selectors of García-Portugués (2013) <doi:10.1214/13-EJS821> in bw_dir_rot(), bw_dir_ami(), and bw_dir_emi(). Also fits mixtures of von Mises-Fisher distributions with bic_vmf_mix(), integrates on S^q, and provides fast stable evaluations of the log-Bessel function and the von Mises-Fisher normalizing constant for large orders and concentrations.

Version:	1.0.0
Depends:	R (≥ 3.6.0)
Imports:	Bessel, movMF
Suggests:	rotasym, testthat (≥ 3.0.0), viridisLite, withr
Published:	2026-11-12
DOI:	10.32614/CRAN.package.DirStats
Author:	Eduardo García-Portugués [aut, cre]
Maintainer:	Eduardo García-Portugués <edgarcia at est-econ.uc3m.es>
BugReports:	https://github.com/egarpor/DirStats/issues
License:	GPL-3
URL:	https://github.com/egarpor/DirStats
NeedsCompilation:	no
Citation:	DirStats citation info
Materials:	NEWS
CRAN checks:	DirStats results

Documentation:

Reference manual:

DirStats.html , DirStats.pdf

Downloads:

Package source:	DirStats_1.0.0.tar.gz
Windows binaries:	r-devel: DirStats_0.1.10.zip, r-release: DirStats_0.1.10.zip, r-oldrel: DirStats_0.1.10.zip
macOS binaries:	r-release (arm64): DirStats_0.1.10.tgz, r-oldrel (arm64): DirStats_0.1.10.tgz, r-release (x86_64): DirStats_0.1.10.tgz, r-oldrel (x86_64): DirStats_0.1.10.tgz
Old sources:	DirStats archive

Reverse dependencies:

Reverse imports:	pgKDEsphere
Reverse suggests:	polykde, ridgetorus

Linking:

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