effects

4.2-5

Effect Displays for Linear, Generalized Linear, and Other Models

26packages depend

572.1Kdownloads / year

23.5%test coverage

13/13checks pass

Overview

About

Maintained by Brad PriceFirst published 2003-04-2777 releasesCRAN page ↗GitHub ↗

Graphical and tabular effect displays, e.g., of interactions, for various statistical models with linear predictors.

Install

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

install.packages("effects", 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("bprice2652/effects_repo")

Development version from bprice2652/effects_repo. 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-effects

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-effects

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-effects

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

Health

CRAN checks

13OK

Slowest check: 5.5 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.09

23.5%

Coverage · measured lines

100%

Documentation · exports

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

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 75%
Documented parameters: 71%
Return-value docs: 100%
References docs: 40%

Downloads

572.1K

CRAN downloads in the past year

Rank #578 · ~1.6K/day · ~47.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

31.6K30 days

122K90 days

572.1K1 year

Compare downloads with other packages →

Also on2.4K r2u270 autocran3K conda_forge67 c2d4u

Repository

GitHub ↗ bprice2652/effects_repo

0Stars

0Forks

0Open issues

0Open PRs

0Releases

License GPL-3.0 · Last activity 2026-02-19

Repository practices

Upstream repositoryBeta

Checks run against github.com/bprice2652/effects_repo on 2026-07-19.

No development-tooling practices detected in the upstream repository.

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

Dependencies

Declared dependencies

15 external dependencies (excludes base and recommended)

Depends (3)

R >= 3.5.0carDatadatasets

Imports (12)

lme4nnetlatticegridcolorspacegraphicsgrDevicesstatssurveyutilsestimability insight

LinkingTo (0)

none

Suggests (12)

pbkrtestnlmeMASSpoLCA heplotssplinesordinal car knitr betareg alr4 robustlmm

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

26direct

32indirect

Rcmdr alr4 Deducer GLMpack SemNeT adventr nestedLogit AER BiodiversityR GLMMadaptive Guerry HistData acss afex agridat broom.helpers car cv ggeffects glmmTMB heplots ivreg psychomix sdmTMB sjPlot vcdExtra

Code & Tests

Code Composition

R 4,630 (46%)Other 2,239 (22%)Vignettes 1,689 (17%)Rd 1,570 (16%)

Code characteristics

Object systems

S355

Cyclomatic complexity: 2.0 median / 275 max

Test coverage

Line coverage

24%

Expression

26.0%

Tests / Examples

23.5% / 59% ex

Functions

108 16 exported

Complexity

9.5 avg / 275 max

Call network

108 nodes / 92 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

108 functions

Function	Cyclo	Coverage
Effect.default exp	17	0%
allEffects exp	1	0%
allEffects.default exp	4	0%
effCoef exp	1	0%
effSources exp	1	0%
effSources.default exp	1	0%

People & History

People (9)

Maintainer (1)

Brad Price

Author, Maintainer · added in 4.1-1

Authors (5)

Brad Price

Author, Maintainer · added in 4.1-1

John Fox

Author · added in 2.8.0

Michael Friendly

Author · added in 2.15.1

Jangman Hong

Author · added in 2.15.1

Sanford Weisberg

Author · added in 2.13.2

Contributors (4)

R Core Team

Contributor · added in 4.0-0

Robert Andersen

Contributor · added in 2.15.1

David Firth

Contributor

Steve Taylor

Contributor · added in 2.2-2

Listed in earlier versions (7)

John Fox. I am grateful to Robert Andersen

no longer listed · 0.9-0 to 2.7.0

and Michael Friendly

no longer listed · 0.9-0 to 2.1-0

for various suggestions.

no longer listed · 0.9-0 to 2.1-0

Jangman Hong. We are grateful to Robert Andersen

no longer listed · 2.8.0 to 2.0-12

and to Ian Fellows for contributing patches.

no longer listed · 2.0-9

for various suggestions

no longer listed · 2.0-9

and Jangman Hong. We are grateful to Robert Andersen

no longer listed · 2.13.2 to 2.1-0

Package Timeline

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

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R 4.6.0 released · 2026-04-24
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R 1.8.0 released · 2003-10-08
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R 1.7.0 released · 2003-04-16

Package metadata

First published: 2003-04-27
Total releases: 77 / 23 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Download size: 2.1 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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Econometrics Machine Learning & Statistical Learning Mixed, Multilevel, and Hierarchical Models in R Teaching Statistics

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