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lme4 (version 0.9975-12)
Linear mixed-effects models using S4 classes
Description
Fit linear and generalized linear mixed-effects models.
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Install
install.packages('lme4')
Monthly Downloads
539,225
Version
0.9975-12
License
GPL version 2 or later
Maintainer
Douglas Bates
Last Published
December 2nd, 2025
Functions in lme4 (0.9975-12)
Search all functions
lmer
Fit (Generalized) Linear Mixed-Effects Models
fixef
Extract Fixed Effects
pooledSD
Extract pooled standard deviation
lmer-class
Mixed Model Representations and *mer Methods
BIC
Bayesian Information Criterion
pedigree
Pedigree Constructor
lmList-class
Class "lmList"
lmList
List of lm Objects with a Common Model
VarCorr-class
Class "VarCorr"
mcmcsamp
Generate an MCMC sample
ranef
Extract Random Effects
pedigree-class
Class "pedigree"
cbpp
Serological Incidence of Contagious Bovine Pleuropneumonia in Ethiopia
sleepstudy
Reaction times in a sleep deprivation study
VarCorr
Extract variance and correlation components
gsummary
Summarize a data frame by group
hatTrace
Extract the trace of the `hat' matrix