Null Models for Categorical and Continuous Community Matrices R package nullcat version 0.2.0 Provides null model algorithms for categorical and quantitative community ecology data. Extends classic binary null models (e.g., 'curveball', 'swap') to work with categorical data. Provides a stratified randomization framework for continuous data. Software Imports: Rcpp LinkingTo: Rcpp Suggests: knitr, rmarkdown, testthat (>= 3.0.0), vegan Matthew Kling <mattkling@berkeley.edu> Comprehensive R Archive Network (CRAN) Matthew Kling [aut, cre, cph] MIT + file LICENSE (https://CRAN.R-project.org/package=nullcat/LICENSE) 2026-04-06 application/tgz https://CRAN.R-project.org/package=nullcat doi:10.32614/CRAN.package.nullcat