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lme4  

Linear Mixed-Effects Models using 'Eigen' and S4
View on CRAN: Click here


Download and install lme4 package within the R console
Install from CRAN:
install.packages("lme4")

Install from Github:
library("remotes")
install_github("cran/lme4")

Install by package version:
library("remotes")
install_version("lme4", "1.1-38")



Attach the package and use:
library("lme4")
Maintained by
Ben Bolker
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2003-06-25
Latest Update: 2025-03-26
Description:
Fit linear and generalized linear mixed-effects models. The models and their components are represented using S4 classes and methods. The core computational algorithms are implemented using the 'Eigen' C++ library for numerical linear algebra and 'RcppEigen' "glue".
How to cite:
Ben Bolker (2003). lme4: Linear Mixed-Effects Models using 'Eigen' and S4. R package version 1.1-38, https://cran.r-project.org/web/packages/lme4. Accessed 12 Jul. 2026.
Previous versions and publish date:
(2026-07-09 07:53), 0.2-1 (2003-06-25 07:29), 0.2-2 (2003-07-01 11:53), 0.2-3 (2003-07-04 07:47), 0.2-4 (2003-07-15 20:32), 0.3-1 (2003-07-18 09:30), 0.3-2 (2003-07-21 23:37), 0.3-3 (2003-07-23 10:11), 0.3-4 (2003-08-12 00:50), 0.3-5 (2003-08-12 23:35), 0.3-6 (2003-08-28 08:24), 0.3-7 (2003-09-02 18:05), 0.4-3 (2003-10-01 10:19), 0.4-4 (2003-10-15 19:41), 0.4-7 (2004-01-28 19:51), 0.5-2 (2004-04-12 14:57), 0.6-1 (2004-06-02 10:40), 0.6-2 (2004-06-08 08:26), 0.6-3 (2004-07-07 09:31), 0.6-4 (2004-07-10 22:00), 0.6-5 (2004-09-06 21:04), 0.6-6 (2004-09-14 18:21), 0.6-7 (2004-09-15 09:17), 0.6-9 (2004-10-06 12:27), 0.6-10 (2004-12-14 11:26), 0.6-11 (2004-12-17 12:14), 0.6-12 (2005-01-24 09:58), 0.8-1 (2005-01-24 10:56), 0.8-2 (2005-01-25 10:16), 0.8-3 (2005-02-21 09:40), 0.9-1 (2005-02-25 09:07), 0.9-2 (2005-02-28 09:38), 0.95-1 (2005-04-02 09:48), 0.95-3 (2005-04-06 09:38), 0.95-4 (2005-04-07 17:33), 0.95-5 (2005-04-12 22:39), 0.95-6 (2005-04-19 10:17), 0.95-7 (2005-05-18 17:58), 0.95-8 (2005-05-20 14:48), 0.95-9 (2005-05-30 12:58), 0.95-10 (2005-05-31 12:11), 0.96-1 (2005-06-13 10:14), 0.98-1 (2005-07-28 08:20), 0.995-1 (2006-01-17 11:14), 0.995-2 (2006-01-20 13:51), 0.9975-0 (2006-10-03 12:41), 0.9975-1 (2006-10-06 13:30), 0.9975-3 (2006-10-11 12:49), 0.9975-4 (2006-10-15 11:08), 0.9975-5 (2006-10-16 20:38), 0.9975-6 (2006-10-17 10:38), 0.9975-7 (2006-10-19 19:06), 0.9975-8 (2006-10-25 12:30), 0.9975-9 (2006-11-15 10:24), 0.9975-10 (2006-12-02 16:31), 0.9975-11 (2007-01-26 19:00), 0.9975-12 (2007-01-31 16:53), 0.9975-13 (2007-02-11 13:41), 0.99875-0 (2007-05-15 20:57), 0.99875-1 (2007-06-11 21:16), 0.99875-2 (2007-06-21 08:07), 0.99875-4 (2007-07-07 20:52), 0.99875-5 (2007-07-10 11:23), 0.99875-6 (2007-07-10 15:48), 0.99875-7 (2007-08-04 09:51), 0.99875-8 (2007-09-26 21:21), 0.99875-9 (2007-10-14 18:14), 0.999375-16 (2008-06-23 09:54), 0.999375-17 (2008-06-23 15:20), 0.999375-18 (2008-06-25 12:43), 0.999375-19 (2008-06-26 09:46), 0.999375-20 (2008-06-26 15:25), 0.999375-21 (2008-07-11 18:57), 0.999375-22 (2008-07-12 20:12), 0.999375-23 (2008-07-29 18:12), 0.999375-24 (2008-08-06 19:07), 0.999375-25 (2008-08-14 10:02), 0.999375-26 (2008-08-26 08:49), 0.999375-27 (2008-09-28 21:30), 0.999375-28 (2008-12-14 12:08), 0.999375-30 (2009-05-12 21:05), 0.999375-31 (2009-05-24 10:36), 0.999375-32 (2009-10-20 21:31), 0.999375-33 (2010-04-02 19:08), 0.999375-34 (2010-06-29 18:43), 0.999375-35 (2010-08-19 19:48), 0.999375-36 (2010-10-23 09:44), 0.999375-37 (2010-11-10 12:17), 0.999375-38 (2011-02-17 14:08), 0.999375-39 (2011-03-08 08:47), 0.999375-40 (2011-07-23 15:56), 0.999375-41 (2011-08-09 13:36), 0.999375-42 (2011-10-04 17:58), 0.999999-0 (2012-06-23 07:05), 0.999999-2 (2013-04-15 16:53), 1.0-4 (2013-09-21 10:00), 1.0-5 (2013-10-25 21:06), 1.0-6 (2014-02-02 19:03), 1.1-5 (2014-03-14 08:05), 1.1-6 (2014-04-13 15:59), 1.1-7 (2014-07-19 19:49), 1.1-8 (2015-06-22 09:10), 1.1-9 (2015-08-20 23:56), 1.1-10 (2015-10-06 08:08), 1.1-11 (2016-02-12 07:41), 1.1-12 (2016-04-16 20:40), 1.1-13 (2017-04-19 06:28), 1.1-14 (2017-09-27 10:28), 1.1-15 (2017-12-21 22:29), 1.1-16 (2018-03-28 09:47), 1.1-17 (2018-04-03 23:41), 1.1-18-1 (2018-08-18 01:20), 1.1-19 (2018-11-10 17:30), 1.1-20 (2019-02-04 12:00), 1.1-21 (2019-03-05 23:40), 1.1-23 (2020-04-07 12:00), 1.1-25 (2020-10-23 10:20), 1.1-26 (2020-12-01 01:50), 1.1-27.1 (2021-06-22 07:50), 1.1-27 (2021-05-15 08:20), 1.1-28 (2022-02-05 01:40), 1.1-29 (2022-04-07 17:02), 1.1-30 (2022-07-08 09:00), 1.1-31 (2022-11-01 01:47), 1.1-32 (2023-03-14 09:20), 1.1-33 (2023-04-25 11:30), 1.1-34 (2023-07-05 01:50), 1.1-35.1 (2023-11-05 07:20), 1.1-35.2 (2024-03-28 19:50), 1.1-35.3 (2024-04-16 09:50), 1.1-35.4 (2024-06-19 09:20), 1.1-35.5 (2024-07-03 14:30), 1.1-35 (2023-11-03 14:00), 1.1-36 (2025-01-11 16:40), 1.1-37 (2025-03-26 06:40), 1.1-38 (2025-12-02 16:30)
Other packages that cited lme4 R package
View lme4 citation profile
Other R packages that lme4 depends, imports, suggests or enhances
Complete documentation for lme4
Functions, R codes and Examples using the lme4 R package
Some associated functions: Arabidopsis . Dyestuff . GHrule . GQdk . InstEval . NelderMead-class . Nelder_Mead . Pastes . Penicillin . VarCorr . VerbAgg . allFit . bootMer . cake . cbpp . checkConv . confint.merMod . convergence . devcomp . devfun2 . drop1.merMod . dummy . expandDoubleVerts . factorize . findbars . fixef . fortify . getME . glmFamily-class . glmFamily . glmer.nb . glmer . glmerLaplaceHandle . golden-class . grouseticks . hatvalues.merMod . influence.merMod . isNested . isREML . isSingular . lmList . lmList4-class . lmResp-class . lmResp . lme4-package . lme4_testlevel . lmer . lmerControl . merMod-class . merPredD-class . merPredD . mkMerMod . mkReTrms . mkRespMod . mkSimulationTemplate . mkVarCorr . modular . namedList . ngrps . nlformula . nlmer . nloptwrap . nobars . plot.merMod . plots.thpr . predict.merMod . profile-methods . pvalues . ranef . rePCA . rePos-class . rePos . refit . refitML . residuals.merMod . sigma . simulate.formula . simulate.merMod . sleepstudy . subbars . troubleshooting . utilities . vcconv . 
Some associated R codes: AllClass.R . AllGeneric.R . GHrule.R . allFit.R . bootMer.R . checkConv.R . deriv.R . error_factory.R . hooks.R . lmList.R . lmer.R . lmerControl.R . mcmcsamp.R . methods.R . modular.R . nbinom.R . optimizer.R . plot.R . plots.R . predict.R . profile.R . rePCA.R . simulate.formula.R . sparsegrid.R . utilities.R . vcconv.R .  Full lme4 package functions and examples
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