polykde1.1.7 package

Polyspherical Kernel Density Estimation

angles_to_polysph

Conversion between the angular and Cartesian coordinates of the polysp...

angles_to_sph

Conversion between the angular and Cartesian coordinates of the (hyper...

angles_to_torus

Conversion between the angular and Cartesian coordinates of the torus

bw_cv_kre_polysph

Cross-validation bandwidth selection for polyspherical-on-scalar regre...

bw_cv_polysph

Cross-validation bandwidth selection for polyspherical kernel density ...

bw_lcv_min_epa

Minimum bandwidth allowed in likelihood cross-validation for Epanechni...

bw_mrot_polysph

Marginal rule-of-thumb bandwidth selection for polyspherical kernel de...

bw_rot_polysph

Rule-of-thumb bandwidth selection for polyspherical kernel density est...

clean_euler_ridge

Clean ridge points coming from spurious fits

comp_ind_dj

Index of spheres on a polysphere

curv_vmf_polysph

Curvature of a polyspherical von Mises--Fisher density

d_unif_polysph

Density of the uniform distribution on the polysphere

d_vmf_polysph

Density of the product of von Mises--Fisher distributions on the polys...

dist_polysph

Polyspherical distance

eff_kern

Polyspherical kernel moments and efficiencies

euler_ridge

Euler algorithms for polyspherical density ridge estimation

grad_hess_kde_polysph

Gradient and Hessian of the polyspherical kernel density estimator

hom_test_polysph

Homogeneity test for several polyspherical samples

index_ridge

Index a ridge curve, creating the Smoothed and Indexed Estimated Ridge...

interp_polysph

Interpolation on the polysphere

kde_polysph

Polyspherical kernel density estimator

kernel

Kernels on the sphere and their derivatives

kre_polysph

Local polynomial estimator for polyspherical-on-scalar regression

log_cv_kde_polysph

Cross-validation for the polyspherical kernel density estimator

polykde-package

polykde: Polyspherical Kernel Density Estimation

polylog_minus_exp_mu

Polylogarithm function with negative argument

proj_grad_kde_polysph

Projected gradient of the polyspherical kernel density estimator

proj_polysph

Projection onto the polysphere

r_g_kern

Sample from the angular kernel density

r_kde_polysph

Sample from polyspherical kernel density estimator

r_kern_polysph

Sample kernel-distributed polyspherical data

r_path_s1r

Samplers of one-dimensional modes of variation for polyspherical data

r_unif_polysph

Sample uniform polyspherical data

r_vmf_polysph

Sample von Mises--Fisher distributed polyspherical data

softplus

Stable computation of the softplus function

view_srep

s-rep viewer

Kernel density estimation on the polysphere, (hyper)sphere, and circle. Includes functions for density estimation, regression estimation, ridge estimation, bandwidth selection, kernels, samplers, and homogeneity tests. Companion package to García-Portugués and Meilán-Vila (2025) <doi:10.1080/01621459.2025.2521898> and García-Portugués and Meilán-Vila (2023) <doi:10.1007/978-3-031-32729-2_4>.

  • Maintainer: Eduardo García-Portugués
  • License: GPL-3
  • Last published: 2025-07-27