emmeans

Overview

About

Maintained by Julia PiaskowskiFirst published 2017-10-2073 releasesCRAN page ↗GitHub ↗

Obtain estimated marginal means (EMMs) for many linear, generalized linear, and mixed models. Compute contrasts or linear functions of EMMs, trends, and comparisons of slopes. Plots and other displays. Least-squares means are discussed, and the term "estimated marginal means" is suggested, in Searle, Speed, and Milliken (1980) Population marginal means in the linear model: An alternative to least squares means, The American Statistician 34(4), 216-221 doi:10.1080/00031305.1980.10483031.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("emmeans", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("rvlenth/emmeans")

Development version from rvlenth/emmeans. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-emmeans

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-emmeans

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-emmeans

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 9.2 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.02

26.1%

Coverage · measured lines

100%

Documentation · exports

8

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 785 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 98%
Documented parameters: 83%
Return-value docs: 93%
References docs: 9%

Downloads

2M

CRAN downloads in the past year

Rank #262 · ~5.6K/day · ~170.4K/mo

Releases R versions

Daily download trend is not available in this view yet.

150.9K30 days

517.9K90 days

2M1 year

Compare downloads with other packages →

Also on21K r2u239 autocran69.7K conda_forge838 c2d4u

Repository

GitHub ↗ rvlenth/emmeans

420Stars

39Forks

2Open issues

0Open PRs

0Releases

808Commits

24Contributors

808 commits · Last activity 2026-07-21 · +0.5% stars, 30d

Stars over time

2025-07-05 · 3862026-07-07 · 419

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/rvlenth/emmeans on 2026-07-19.

Continuous integration (1)

GitHub Actions

Governance and community (1)

Issue templates

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

Dependencies

Declared dependencies

30 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (8)

estimabilitygraphicsmethodsmvtnorm numDeriv rlangstatsutils

LinkingTo (0)

none

Suggests (31)

bayesplot bayestestR biglm brms car coda compositions ggplot2 knitrlatticelme4 lmerTest logsplineMASSmediationmgcvmultcomp multcompView MuMInnlmeordinal pbkrtest rmarkdown robmixglm rsm sandwich scalessplinestestthat tibble xtable

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

124direct

105indirect

and 76 more packages.

Code & Tests

Code Composition

R 17,793 (57%)Vignettes 7,191 (23%)Rd 6,053 (20%)

Code characteristics

Object systems

S3153S4 class1S4 method1

Cyclomatic complexity: 2.0 median / 117 max
Test cases: 21 / 0.02 per code line

Test coverage

Line coverage

26%

Expression

26.9%

Tests / Examples

26.1% / 57% ex

Functions

354 83 exported

Complexity

5.8 avg / 117 max

Call network

354 nodes / 459 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

354 functions

Function	Cyclo	Coverage
.aovlist.dffun exp	3	0%
.combine.terms exp	1	0%
.emm_register exp	3	0%
.emm_vignette exp	1	0%
.get.offset exp	2	0%
.hurdle.support exp	5	0%

Datasets

Bundled datasets · 8

Name	Class	Rows × Cols	Also ships in
MOats	data.frame	18 × 3	–
auto.noise	data.frame	36 × 4	–
feedlot	data.frame	67 × 4	–
fiber	data.frame	15 × 3	–
neuralgia	data.frame	60 × 5	–
nutrition	data.frame	107 × 4	–
oranges	data.frame	36 × 6	–
pigs	data.frame	29 × 3	–

People & History

People (14)

Maintainer (1)

Julia Piaskowski

Maintainer, Author · added in 1.10.2

Authors (2)

Julia Piaskowski

Maintainer, Author · added in 1.10.2

Russell V. Lenth

Author, Copyright holder · added in 1.5.3

Contributors (12)

Balazs Banfai

Contributor · added in 1.10.5

Ben Bolker

Contributor · added in 1.8.5

Paul Buerkner

Contributor · added in 1.2

Alexis Derumigny

Contributor · added in 2.0.4

Iago Giné-Vázquez

Contributor · added in 1.8.2

Maxime Hervé

Contributor · added in 1.11.2-8

Maarten Jung

Contributor · added in 1.8.0

Jonathon Love

Contributor

Show 4 more contributors

Fernando Miguez

Contributor · added in 1.7.1-1

Hannes Riebl

Contributor · added in 1.5.0

Paul Schmidt

Contributor · added in 2.0.4

Henrik Singmann

Contributor · added in 1.2

Copyright holders (1)

Russell V. Lenth

Author, Copyright holder · added in 1.5.3

Listed in earlier versions (2)

Maxime Herve

no longer listed · 0.9 to 1.11.2

Russell Lenth

no longer listed · 0.9 to 1.5.2-1

Package Timeline

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

2.0.4Latest
2026-07-15 · current release · diff ↗
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R 4.6.0 released · 2026-04-24
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Show 67 earlier events

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R 4.1.0 released · 2021-05-18
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R 4.0.0 released · 2020-04-24
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R 3.6.0 released · 2019-04-26
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0.9
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R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-10-20
Total releases: 73 / 9 yrs
License: GPL-2 | GPL-3 OSI
Minimum R: ≥ 4.1.0
Bundled data: 4.9 KB / 9 files
Download size: 1.5 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Mixed, Multilevel, and Hierarchical Models in R