plyr

Overview

About

Maintained by Hadley WickhamFirst published 2008-09-3035 releasesCRAN page ↗GitHub ↗

A set of tools that solves a common set of problems: you need to break a big problem down into manageable pieces, operate on each piece and then put all the pieces back together. For example, you might want to fit a model to each spatial location or time point in your study, summarise data by panels or collapse high-dimensional arrays to simpler summary statistics. The development of 'plyr' has been generously supported by 'Becton Dickinson'.

Install

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

install.packages("plyr", 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("hadley/plyr")

Development version from hadley/plyr. 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-plyr

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-plyr

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-plyr

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

Health

CRAN checks

4NOTE9OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64

Slowest check: 2.8 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.63

84.4%

Coverage · measured lines

100%

Documentation · exports

1

Dependencies · direct

Check history

NOTE2026-07-16
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 267 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 96%
Documented parameters: 96%
Return-value docs: 44%
References docs: 24%

Downloads

6M

CRAN downloads in the past year

Rank #117 · ~16.3K/day · ~496.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

581.5K30 days

1.8M90 days

6M1 year

Compare downloads with other packages →

Also on59.7K r2u212 autocran588.7K conda_forge2.7K c2d4u

Repository

GitHub ↗ hadley/plyr

504Stars

113Forks

27Open issues

2Open PRs

9Releases

927Commits

21Contributors

927 commits · Last activity 2024-11-06 · 0% stars, 30d

Stars over time

2025-03-07 · 5002026-07-07 · 504

Repository practices

Upstream repositoryBeta

7 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/hadley/plyr on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (2)

lintrRStudio project

Coverage (1)

Codecov

Show all practices

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.1.0

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (8)

abind covr doParallel foreach iterators itertoolstcltktestthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

647direct

1,554indirect

and 599 more packages.

People & History

People (1)

Maintainer (1)

Hadley Wickham

Author, Maintainer

Authors (1)

Hadley Wickham

Author, Maintainer

Package Timeline

35 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
1.8.9Latest
2023-10-02 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
1.8.8
2022-11-11 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.8.7
2022-03-24 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.8.6
2020-03-03 · diff ↗
1.8.5
2019-12-10 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
1.8.4
2016-06-08 · diff ↗

Show 42 earlier events

R
R 3.3.0 released · 2016-05-03
1.8.3
2015-06-12 · diff ↗
1.8.2
2015-04-21 · diff ↗
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
1.8.1
2014-02-26 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.8
2012-12-06 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.7.1
2012-01-08 · diff ↗
1.7
2011-12-30 · diff ↗
R
R 2.14.0 released · 2011-10-31
1.6
2011-07-29 · diff ↗
1.5.2
2011-04-24 · diff ↗
1.5.1
2011-04-13 · diff ↗
R
R 2.13.0 released · 2011-04-13
1.5
2011-04-10 · diff ↗
1.4.1
2011-04-05 · diff ↗
1.4
2011-01-04 · diff ↗
R
R 2.12.0 released · 2010-10-15
1.2.1
2010-09-11 · diff ↗
1.2
2010-09-10 · diff ↗
1.1
2010-07-24 · diff ↗
1.0.3
2010-07-07 · diff ↗
1.0.2
2010-07-06 · diff ↗
1.0.1
2010-07-06 · diff ↗
1.0
2010-07-05 · diff ↗
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
0.1.9
2009-06-23 · diff ↗
0.1.8
2009-04-21 · diff ↗
R
R 2.9.0 released · 2009-04-17
0.1.7
2009-04-15 · diff ↗
0.1.6
2009-04-15 · diff ↗
0.1.5
2009-02-24 · diff ↗
0.1.4
2008-12-13 · diff ↗
0.1.3
2008-11-19 · diff ↗
0.1.2
2008-11-18 · diff ↗
R
R 2.8.0 released · 2008-10-20
0.1.1
2008-10-08 · diff ↗
0.1
2008-09-30
R
R 2.7.0 released · 2008-04-22

Package metadata

First published: 2008-09-30
Total releases: 35 / 18 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.1.0
Bundled data: 292 KB / 2 files
Download size: 392 KB
Installed size: not tracked yet
With dependencies: not tracked yet