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sommer

4.4.6

Solving Mixed Model Equations in R

9packages depend
78.8Kdownloads / year
0.1%test coverage
13/13checks pass

Overview

About
Maintained by Giovanny Covarrubias-PazaranFirst published 2016-01-2464 releasesCRAN page ↗GitHub ↗

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 doi:10.1371/journal.pone.0156744; Maier et al., 2015 doi:10.1016/j.ajhg.2014.12.006; 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.

Install

Health

CRAN checks
13OK
Slowest check: 6.5 min · r-release-macos-x86_64
Code health
Yes
Tests · ratio 0.26
0.1%
Coverage · measured lines
100%
Documentation · exports
7
Dependencies · direct
Check history
  • OK2026-08-04
    13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • NOTE2026-08-01
    12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • OK2026-04-25
    12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • NOTE2026-04-22
    12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • ERROR2026-04-18
    11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
Show 3 earlier snapshots
  • NOTE2026-04-10
    12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
  • ERROR2026-04-09
    11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
  • NOTE2026-03-10
    12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation
READMEYes · 191 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo
Examples that run
100%
Documented parameters
100%
Return-value docs
97%
References docs
73%

Downloads

78.8K
CRAN downloads in the past year
Rank #1,605 · ~216/day · ~6.6K/mo
Daily download trend is not available in this view yet.
4.7K30 days
15.6K90 days
78.8K1 year
Compare downloads with other packages →
Also on1K r2u181 autocran67 c2d4u

Repository

Repository
60Stars
34Forks
4Open issues
0Open PRs
0Releases
286Commits
15Contributors
average-informationmixed-modelsrcpparmadillo
286 commits · Last activity 2026-04-05 · 0% stars, 30d

Stars over time

2025-07-11 · 492026-07-07 · 60

Repository practices

Upstream repositoryBeta

Checks run against github.com/covaruber/sommer on 2026-08-16.

No development-tooling practices detected in the upstream repository.

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies
12 external dependencies (excludes base and recommended)
Depends (7)
R >= 3.5.0MatrixmethodsstatsMASScrayonenhancer
Imports (1)
Enhances (0)
none

Code & Tests

People & History

People (1)
Maintainer (1)
Author, Maintainer
Authors (1)
Author, Maintainer
Package Timeline

64 releases. Pick two to compare their code metrics. R releases are shown for context.

  • 4.4.6Latest
    2026-07-09 · current release · diff ↗
  • R
    R 4.6.0 released · 2026-04-24
  • 4.4.5
    2026-03-25 · diff ↗
  • 4.4.4
    2025-11-26 · diff ↗
  • 4.4.3
    2025-07-30 · diff ↗
  • 4.4.2
    2025-05-26 · diff ↗
  • R
    R 4.5.0 released · 2025-04-11
  • 4.4.1
    2025-04-04 · diff ↗
  • 4.3.7
    2025-02-03 · diff ↗
  • 4.3.6
    2024-10-20 · diff ↗
  • 4.3.5
    2024-07-31 · diff ↗
  • R
    R 4.4.0 released · 2024-04-24
  • 4.3.4
    2024-03-17 · diff ↗
  • 4.3.3
    2023-11-13 · diff ↗
  • 4.3.2
    2023-08-11 · diff ↗
  • 4.3.1
    2023-06-14 · diff ↗
Show 60 earlier events

Package metadata

First published
2016-01-24
Total releases
64 / 10 yrs
License
GPL (>= 2) OSI
Minimum R
≥ 3.5.0
Download size
531 KB
Installed size
not tracked yet
With dependencies
not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("sommer")
Covarrubias-Pazaran, G. (2026). sommer: Solving Mixed Model Equations in R (Version 4.4.6) [Computer software]. https://doi.org/10.32614/CRAN.package.sommer

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

APA

Balamuta, J. J. (2026). R Observatory: Metrics for sommer version 4.4.6 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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