SamsaRaLight: Simulate Tree Light Transmission Using Ray-Tracing

Provides tools to simulate light transmission in forest stands using three-dimensional ray-tracing. The package allows users to build virtual stands from tree inventories and to estimate (1) light intercepted by individual trees, (2) light reaching the forest floor, and (3) light at virtual sensors. The package is designed for ecological and forestry applications, including the analysis of light competition, tree growth, and forest regeneration. The implementation builds on the individual-based ray-tracing model SamsaraLight developed by Courbaud et al. (2003) <doi:10.1016/S0168-1923(02)00254-X>.

Version:	1.0.0
Depends:	R (≥ 4.0)
Imports:	concaveman, data.table, dplyr, ggforce, ggnewscale, ggplot2, grid, httr, patchwork, Rcpp, RhpcBLASctl, scales, sf, sfheaders, tidyr
LinkingTo:	Rcpp
Suggests:	cowplot, knitr, purrr, rmarkdown, testthat (≥ 3.0.0)
Published:	2026-04-16
DOI:	10.32614/CRAN.package.SamsaRaLight
Author:	Natheo Beauchamp [aut, cre] (R package developer), Gauthier Ligot [aut] (Java Capsis developer and algorithm improvement), Francois de Coligny [aut] (Java Capsis developer), Maxime Jaunatre [aut] (R package support developer), Benoit Courbaud [aut, cph] (Algorithm and theory creator)
Maintainer:	Natheo Beauchamp <beauchamp.natheo at gmail.com>
BugReports:	https://github.com/natheob/SamsaRaLight/issues/
License:	GPL (≥ 3)
URL:	https://natheob.github.io/SamsaRaLight/
NeedsCompilation:	yes
Materials:	README
CRAN checks:	SamsaRaLight results [issues need fixing before 2026-05-01]

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