Linear Latent Non-Gaussian Models with Flexible Distributions R package ngme2 version 0.9.7 Fits and analyzes linear latent non-Gaussian models for temporal, spatial, and space-time data. The package provides model components for autoregressive and Ornstein-Uhlenbeck processes, random walks, Matern fields based on stochastic partial differential equations, separable and non-separable space-time models, graph-based Matern models, bivariate type-G fields, and user-defined sparse operators. Latent fields and observation models can use Gaussian and non-Gaussian noise distributions, including normal inverse Gaussian, generalized asymmetric Laplace, and skew-t distributions. Functions are included for simulation, likelihood-based estimation, prediction, cross-validation, convergence diagnostics, stochastic gradient optimization, batch-means confidence intervals, and posterior-like sampling. The modeling framework is described in Bolin, Jin, Simas and Wallin (2026) "A Unified and Computationally Efficient Non-Gaussian Statistical Modeling Framework" <doi:10.48550/arXiv.2602.23987>. Software Depends: R (>= 3.5.0) Imports: Matrix, Rcpp, methods, rlang, ggplot2, graphics, fmesher, stats, gridExtra, withr LinkingTo: Rcpp, RcppEigen, Suggests: R.rsp, knitr, rmarkdown, testthat (>= 3.0.0), MASS, dplyr, fields, inlabru, MetricGraph, rSPDE, sf, zoo, mvtnorm Xiaotian Jin <xiaotian.jin@kaust.edu.sa> Comprehensive R Archive Network (CRAN) David Bolin [aut, cph], Xiaotian Jin [aut, cre], Alexandre Simas [aut], Jonas Wallin [aut], Andrea V. Rocha [ctb] (contributed to many vignettes and examples), Timothy A. Davis [ctb, cph] (SuiteSparse components), Patrick R. Amestoy [ctb, cph] (SuiteSparse AMD and CAMD components), Iain S. Duff [ctb, cph] (SuiteSparse AMD and CAMD components), John K. Reid [ctb, cph] (SuiteSparse AMD-derived code), Yanqing Chen [ctb, cph] (SuiteSparse CAMD components), Sivasankaran Rajamanickam [ctb, cph] (SuiteSparse CCOLAMD components), Stefan Larimore [ctb, cph] (SuiteSparse CCOLAMD and COLAMD components), William W. Hager [ctb, cph] (SuiteSparse CHOLMOD Modify components), University of Florida [cph] (SuiteSparse CHOLMOD and CCOLAMD components), Regents of the University of Minnesota [cph] (METIS/GKlib components bundled with SuiteSparse), Free Software Foundation, Inc. [cph] (GKlib regex/getopt code bundled with SuiteSparse), Makoto Matsumoto [ctb, cph] (Mersenne Twister code bundled with SuiteSparse), Takuji Nishimura [ctb, cph] (Mersenne Twister code bundled with SuiteSparse), Alexander Chemeris [ctb, cph] (MS integer headers bundled with SuiteSparse) GPL (>= 3) 2026-04-28 application/tgz https://CRAN.R-project.org/package=ngme2 doi:10.32614/CRAN.package.ngme2