Formula

1.2-5

Extended Model Formulas

204packages depend

4.6Mdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Achim ZeileisFirst published 2008-12-1915 releasesCRAN page ↗

Infrastructure for extended formulas with multiple parts on the right-hand side and/or multiple responses on the left-hand side (see doi:10.18637/jss.v034.i01).

Install

R (CRAN)Ubuntu (r2u)openSUSE (OBS)

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

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

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-formula

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

# 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-Formula

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

Health

CRAN checks

13OK

Slowest check: 1.3 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.83

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-27
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-06-14
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

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

Downloads

4.6M

CRAN downloads in the past year

Rank #173 · ~12.5K/day · ~381.2K/mo

Releases R versions

Daily download trend is not available in this view yet.

310.4K30 days

1.1M90 days

4.6M1 year

Compare downloads with other packages →

Also on50.4K r2u228 autocran173.1K conda_forge15K c2d4u

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (2)

R >= 2.0.0stats

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

204direct

1,502indirect

and 156 more packages.

Code & Tests

People & History

People (2)

Maintainer (1)

Achim Zeileis

Author, Maintainer

Authors (2)

Achim Zeileis

Author, Maintainer

Yves Croissant

Author

Package Timeline

15 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
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
1.2-5Latest
2023-02-24 · current release · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
1.2-4
2020-10-16 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
1.2-3
2018-05-03 · diff ↗
R
R 3.5.0 released · 2018-04-23
1.2-2
2017-07-11 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16

Show 21 earlier events

1.2-1
2015-04-07 · diff ↗
1.2-0
2015-01-20 · diff ↗
1.1-2
2014-07-13 · diff ↗
R
R 3.1.0 released · 2014-04-10
1.1-1
2013-04-04 · diff ↗
R
R 3.0.0 released · 2013-04-03
R
R 2.15.0 released · 2012-03-30
1.1-0
2012-01-27 · diff ↗
R
R 2.14.0 released · 2011-10-31
1.0-1
2011-09-03 · 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
1.0-0
2010-04-04 · diff ↗
R
R 2.10.0 released · 2009-10-26
0.2-0
2009-09-23 · diff ↗
R
R 2.9.0 released · 2009-04-17
0.1-3
2009-02-13 · diff ↗
0.1-2
2009-01-11 · diff ↗
0.1-1
2008-12-19
R
R 2.8.0 released · 2008-10-20

Package metadata

First published: 2008-12-19
Total releases: 15 / 18 yrs
License: GPL-2 | GPL-3 OSI
Minimum R: ≥ 2.0.0
Download size: 125 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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