Spatial Absorbing Markov Chains R package samc version 4.2.1 Implements functions for working with absorbing Markov chains. The implementation is based on the framework described in "Toward a unified framework for connectivity that disentangles movement and mortality in space and time" by Fletcher et al. (2019) <doi:10.1111/ele.13333>, which applies them to spatial ecology. This framework incorporates both resistance and absorption with spatial absorbing Markov chains (SAMC) to provide several short-term and long-term predictions for metrics related to connectivity in landscapes. Despite the ecological context of the framework, this package can be used in any application of absorbing Markov chains. Software Depends: R (>= 3.6.0) Imports: methods, Matrix (>= 1.5-3), raster, terra (>= 1.7-3) LinkingTo: Rcpp (>= 1.0.10), RcppEigen (>= 0.3.3.9.3), RcppThread (>= 2.1.3) Suggests: knitr, rmarkdown, testthat, gdistance, viridisLite Andrew Marx <ajm.rpackages@gmail.com> Comprehensive R Archive Network (CRAN) Andrew Marx [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-7456-1631>), Robert Fletcher [ctb] (ORCID: <https://orcid.org/0000-0003-1717-5707>), Miguel Acevedo [ctb] (ORCID: <https://orcid.org/0000-0002-8289-1497>), Jorge Sefair [ctb] (ORCID: <https://orcid.org/0000-0002-5887-8938>), Chao Wang [ctb] (ORCID: <https://orcid.org/0000-0003-2706-5122>), Hughes Josie [ctb] (ORCID: <https://orcid.org/0000-0001-7875-9015>), Barrett Griffin [ctb] AGPL (>= 3) 2026-03-13 application/tgz https://CRAN.R-project.org/package=samc doi:10.32614/CRAN.package.samc