xnicher: Estimates Ecological Niche Models Using Ellipses

Ecological niche model estimation using ellipsoidal geometry under an M hypothesis. Fits nine likelihood families (presence-only, weighted, inverse-probability-weighted, skew-normal, skew-normal-weighted, skew-t, skew-t-weighted, ncst, and ncst-weighted) via multi-start optimisation with Sobol sequences. Methods for the optimisation of ellipses parameters are as described in Jimenez et al. (2022) <doi:10.1016/j.ecolmodel.2021.109823>.

Package details

AuthorAngel Robles [aut, cre], Laura Jimenez [aut, ctb] (ORCID: <https://orcid.org/0000-0002-4674-4270>)
MaintainerAngel Robles <a.l.robles.fernandez@gmail.com>
LicenseGPL (>= 3)
Version1.0.0
URL https://github.com/alrobles/xnicher 
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("xnicher")

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xnicher documentation built on Sept. 15, 2026, 5:08 p.m.