R Observatory: Metrics for contrast version 0.24.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

contrast

0.24.2

A Collection of Contrast Methods

0packages depend

10.7Kdownloads / year

69.1%test coverage

13/13checks pass

Overview

About

Maintained by Alan O'CallaghanFirst published 2007-04-2716 releasesCRAN page ↗GitHub ↗

One degree of freedom contrasts for 'lm', 'glm', 'gls', and 'geese' objects.

Install

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

install.packages("contrast", 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("Alanocallaghan/contrast")

Development version from Alanocallaghan/contrast. 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-contrast

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-contrast

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-contrast

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

Health

CRAN checks

13OK

Slowest check: 3.1 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.22

69.1%

Coverage · measured lines

100%

Documentation · exports

3

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
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 · 33 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 82%
Return-value docs: 50%
References docs: 0%

Downloads

10.7K

CRAN downloads in the past year

Rank #4,359 · ~29/day · ~888/mo

Releases R versions

Daily download trend is not available in this view yet.

51430 days

1.8K90 days

10.7K1 year

Compare downloads with other packages →

Also on165 r2u17 autocran1.5K conda_forge

Repository

GitHub ↗ alanocallaghan/contrast

4Stars

1Forks

1Open issues

0Open PRs

0Releases

38Commits

4Contributors

38 commits · Last activity 2022-10-05

Stars over time

2025-03-23 · 42026-07-07 · 4

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/alanocallaghan/contrast on 2026-08-23.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

revdep/

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (3)

nlmesandwich rms

LinkingTo (0)

none

Suggests (10)

knitr kableExtra dplyr ggplot2 tidyr rmarkdown testthat covr geepacksplines

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (6)

Maintainer (1)

Alan O'Callaghan

Maintainer · added in 0.22

Authors (5)

James Forester

Author · added in 0.8

Max Kuhn

Author

Thorn Thaler

Author · added in 0.19

Steve Weston

Author

Jed Wing

Author

Listed in earlier versions (1)

contributions from Steve Weston

no longer listed · 0.8 to 0.21

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
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R 4.4.0 released · 2024-04-24
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R 4.3.0 released · 2023-04-21
0.24.2Latest
2022-10-05 · current release · diff ↗
R
R 4.2.0 released · 2022-04-22
0.24.1
2021-12-15 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
0.22
2020-03-19 · diff ↗
R
R 3.6.0 released · 2019-04-26
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R 3.5.0 released · 2018-04-23
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R 3.4.0 released · 2017-04-21
0.21
2016-09-22 · diff ↗
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16

Show 25 earlier events

R
R 3.1.0 released · 2014-04-10
0.19
2013-11-16 · diff ↗
0.18
2013-05-24 · diff ↗
R
R 3.0.0 released · 2013-04-03
R
R 2.15.0 released · 2012-03-30
0.17
2011-12-24 · diff ↗
0.16
2011-11-25 · diff ↗
R
R 2.14.0 released · 2011-10-31
0.14
2011-08-01 · diff ↗
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
0.13
2010-02-15 · diff ↗
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R 2.10.0 released · 2009-10-26
0.12
2009-10-19 · diff ↗
0.10
2009-07-18 · diff ↗
R
R 2.9.0 released · 2009-04-17
0.9
2009-01-26 · diff ↗
R
R 2.8.0 released · 2008-10-20
0.8
2008-05-28 · diff ↗
R
R 2.7.0 released · 2008-04-22
0.6
2007-11-27 · diff ↗
R
R 2.6.0 released · 2007-10-03
0.5
2007-04-27
R
R 2.5.0 released · 2007-04-24

Package metadata

First published: 2007-04-27
Total releases: 16 / 19 yrs
License: GPL-2 OSI
Minimum R: ≥ 2.10
Bundled data: 1.1 KB / 2 files
Download size: 112 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("contrast")

Format

O'Callaghan, A., Forester, J., Kuhn, M., Thaler, T., Weston, S., & Wing, J. (2022). contrast: A Collection of Contrast Methods (Version 0.24.2) [Computer software]. https://doi.org/10.32614/CRAN.package.contrast

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for contrast version 0.24.2 [Data set]. HJJB, LLC. Data release v2026-08-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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