Package: sommer Type: Package Title: Solving Mixed Model Equations in R Version: 4.4.5 Date: 2026-03-19 Authors@R: c( person("Giovanny","Covarrubias-Pazaran", email="cova_ruber@live.com.mx", role=c("aut","cre"), comment=c(ORCID="0000-0002-7194-3837")) ) Maintainer: Giovanny Covarrubias-Pazaran Description: Structural multivariate-univariate linear mixed model solver for estimation of multiple random effects with unknown variance-covariance structures (e.g., heterogeneous and unstructured) and known covariance among levels of random effects (e.g., pedigree and genomic relationship matrices) (Covarrubias-Pazaran, 2016 ; Maier et al., 2015 ; Jensen et al., 1997). REML estimates can be obtained using the Direct-Inversion Newton-Raphson and Direct-Inversion Average Information algorithms for the problems r x r (r being the number of records) or using the Henderson-based average information algorithm for the problem c x c (c being the number of coefficients to estimate). Spatial models can also be fitted using the two-dimensional spline functionality available. Depends: R (>= 3.5.0), Matrix (>= 1.1.1), methods, stats, MASS, crayon, enhancer LazyLoad: yes License: GPL (>= 2) Imports: Rcpp (>= 0.12.19) BugReports: https://github.com/covaruber/sommer/issues URL: https://github.com/covaruber/sommer LinkingTo: Rcpp, RcppArmadillo, RcppProgress Suggests: rmarkdown, knitr, plyr, parallel, orthopolynom, RSpectra, lattice, testthat (>= 3.0.0) VignetteBuilder: knitr Config/testthat/edition: 3 Repository: https://covaruber.r-universe.dev Date/Publication: 2026-04-05 03:05:15 UTC RemoteUrl: https://github.com/covaruber/sommer RemoteRef: HEAD RemoteSha: 23d5230c283acee2fdad8e5fd94177e4aa4431fd NeedsCompilation: yes Packaged: 2026-06-07 10:22:08 UTC; root Author: Giovanny Covarrubias-Pazaran [aut, cre] (ORCID: )