Poisson Lognormal Models R package PLNmodels version 1.2.2 The Poisson-lognormal model and variants (Chiquet, Mariadassou and Robin, 2021 <doi:10.3389/fevo.2021.588292>) can be used for a variety of multivariate problems when count data are at play, including principal component analysis for count data, discriminant analysis, model-based clustering and network inference. Implements variational algorithms to fit such models accompanied with a set of functions for visualization and diagnostic. Software Depends: R (>= 4.1.0) Imports: cli, corrplot, dplyr, future, future.apply, ggplot2, glassoFast, grDevices, grid, gridExtra, igraph, magrittr, MASS, Matrix, methods, nloptr, parallel, pscl, purrr, R6, Rcpp, rlang, scales, stats, tidyr, torch LinkingTo: nloptr, Rcpp, RcppArmadillo Suggests: factoextra, knitr, rmarkdown, spelling, testthat Julien Chiquet <julien.chiquet@inrae.fr> Comprehensive R Archive Network (CRAN) Julien Chiquet [aut, cre] (ORCID: <https://orcid.org/0000-0002-3629-3429>), Mahendra Mariadassou [aut] (ORCID: <https://orcid.org/0000-0003-2986-354X>), Stéphane Robin [aut], François Gindraud [aut], Julie Aubert [ctb], Bastien Batardière [ctb], Giovanni Poggiato [ctb], Cole Trapnell [ctb], Maddy Duran [ctb] GPL (>= 3) 2025-03-21 application/tgz https://CRAN.R-project.org/package=PLNmodels doi:10.32614/CRAN.package.PLNmodels en-US