Learn R Programming

lme4 (version 2.0-6)

Linear Mixed-Effects Models using 'Eigen' and S4

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".

Copy Link

Version

Install

install.packages('lme4')

Monthly Downloads

693,195

Version

2.0-6

License

GPL (>= 2)

Issues

Pull Requests

Stars

Forks

Repository

https://github.com/lme4/lme4/

Maintainer

Ben Bolker

Last Published

July 16th, 2026

Functions in lme4 (2.0-6)

Contagious bovine pleuropneumonia

add information to data based on a fitted model

Deviance Function in Terms of Standard Deviations/Correlations

Deviance of Fitted Mixed-Effect Models

Fitting Generalized Linear Mixed-Effects Models

Coral-eating seastar Culcita novaeguineae data (volume loss version)

Extract Variance and Correlation Components of Covariance

Refit a fitted model with all available optimizers to check convergence

Extract the deviance component list

getDoublevertDefault

Retrieve default double-vertical-bar-expansion method

Model-based (Semi-)Parametric Bootstrap for Mixed Models

Test if a ‘merMod’ Object Has Current Representation

Data on red grouse ticks from Elston et al. 2001

Verbal Aggression item responses

Gopher tortoises shell remains

Fitting Negative Binomial GLMMs

Linear, generalized linear, and nonlinear mixed models

Assessing Convergence for Fitted Models

glmFamily-class

Class "glmFamily" - a reference class for family

Drop all possible single fixed-effect terms from a mixed effect model

Generator object for the glmFamily class

Generator objects for the response classes

Coral-eating seastar Culcita novaeguineae data (binary predation version)

Check characteristics of models

glmerLaplaceHandle

Handle for glmerLaplace

Class "golden" and Generator for Golden Search Optimizer Class

Dummy variables (experimental)

Class "merPredD" - a Dense Predictor Reference Class

Class "lmList4" of 'lm' Objects on Common Model

Test Fitted Model for (Near) Singularity

Create an lmerResp, glmResp or nlsResp instance

mkSimulateTemplate

Make templates suitable for guiding mixed model simulations

Wrappers for additional optimizers

Reference Classes for Response Modules, "(lm|glm|nls|lmer)Resp"

hatvalues.merMod

Diagonal elements of the hat matrix

Extended Convergence Checking

influence.merMod

Influence Diagnostics for Mixed-Effects Models

Compute Confidence Intervals for Parameters of a [ng]lmer Fit

Extract fixed-effects estimates

Attempt to convert grouping variables to factors

Generator object for the merPredD class

Fit List of lm or glm Objects with a Common Model

Number of Levels of a Factor or a "merMod" Model

Extract or Get Generalized Components from a Fitted Mixed Effects Model

Self-naming list function

Diagnostic Plots for 'merMod' Fits

Create a 'merMod' Object

Make new random effect terms for prediction

Mixed-Effects Profile Plots (Regular / Density / Pairs)

Predictions from a model at new data values

Extract Fitted Covariance Structures

Extract the modes of the random effects

Class "rePos"

Mountain dusky salamander mating

Generator object for the rePos (random-effects positions) class

Detect testing level for lme4 examples and tests

Make Variance and Correlation Components of Covariance

Refit a (merMod) Model with a Different Response

Fit Linear Mixed-Effects Models

Modular Functions for Mixed Model Fits

PCA of random-effects covariance matrix

National Institute of Mental Health Schizophrenia Collaborative Study

Manipulate a Nonlinear Model Formula

Getting p-values for fitted models

Fitting Nonlinear Mixed-Effects Models

profile-methods

Profile method for merMod objects

troubleshooting

Troubleshooting

Print and Summary Method Utilities for Mixed Effects

Refit a Model by Maximum Likelihood Criterion

Summary for a [ng]lmer Fit

Toenail onychomycosis data from dermatophyte infections

Convert between representations of (co-)variance structures

simulate.formula

A simulate Method for formula objects that dispatches based on the Left-Hand Side

Extract Residual Standard Deviation 'Sigma'

Covariance matrix of estimated parameters

Control of Mixed Model Fitting

reformulas_imports

(deprecated) formula-processing functions

residuals.merMod

residuals of merMod objects

Class "merMod" of Fitted Mixed-Effect Models

simulate.merMod

Simulate Responses From merMod Object

Reaction times in a sleep deprivation study

Arabidopsis clipping/fertilization data

Univariate Gauss-Hermite quadrature rule

Sparse Gaussian / Gauss-Hermite Quadrature grid

Yield of dyestuff by batch

University Lecture/Instructor Evaluations by Students at ETH

Variation in penicillin testing

Paste strength by batch and cask

NelderMead-class

Class "NelderMead" of Nelder-Mead optimizers and its Generator

Nelder-Mead Optimization of Parameters, Possibly (Box) Constrained

Covariance-class

Virtual Class ‘Covariance’ of Covariance Matrices

Breakage Angle of Chocolate Cakes