riemtan: Riemannian Metrics for Symmetric Positive Definite Matrices

Implements various Riemannian metrics for symmetric positive definite matrices, including AIRM (Affine Invariant Riemannian Metric, <doi:10.1007/s11263-005-3222-z>), Log-Euclidean (<doi:10.1002/mrm.20965>), Euclidean, Log-Cholesky (<doi:10.1137/18M1221084>), and Bures-Wasserstein metrics (<doi:10.1016/j.exmath.2018.01.002>). Provides functions for computing logarithmic and exponential maps, vectorization, and statistical operations on the manifold of positive definite matrices.

Package details

AuthorNicolas Escobar [aut, cre] (ORCID: <https://orcid.org/0009-0006-0800-5692>), Jaroslaw Harezlak [ths]
MaintainerNicolas Escobar <nescoba@iu.edu>
LicenseMIT + file LICENSE
Version0.2.5
URL https://nicoesve.github.io/riemtan/
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("riemtan")

Try the riemtan package in your browser

Any scripts or data that you put into this service are public.

riemtan documentation built on Nov. 11, 2025, 1:06 a.m.