R Observatory: Metrics for reshape2 version 1.4.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

reshape2

1.4.5

Flexibly Reshape Data: A Reboot of the Reshape Package

808packages depend

6.2Mdownloads / year

81.7%test coverage

13/13checks pass

Overview

About

Maintained by Hadley WickhamFirst published 2010-09-1011 releasesCRAN page ↗GitHub ↗

Flexibly restructure and aggregate data using just two functions: melt and 'dcast' (or 'acast').

Install

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

install.packages("reshape2", 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/reshape")

Development version from hadley/reshape. 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-reshape2

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-reshape2

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-reshape2

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

Health

CRAN checks

13OK

Slowest check: 2.7 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.66

81.7%

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
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-16
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 2 earlier snapshots

ERROR2026-04-13
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 · 351 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 0%
References docs: 6%

Downloads

6.2M

CRAN downloads in the past year

Rank #110 · ~17K/day · ~517.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

615.8K30 days

1.9M90 days

6.2M1 year

Compare downloads with other packages →

Also on48.7K r2u85 autocran559.6K conda_forge5.6K c2d4u

Repository

GitHub ↗ hadley/reshape

214Stars

56Forks

26Open issues

12Open PRs

6Releases

261Commits

13Contributors

261 commits · Last activity 2025-11-12 · 0% stars, 30d

Stars over time

2025-04-24 · 2102026-07-07 · 214

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/hadley/reshape on 2026-08-16.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.1

Imports (3)

plyr Rcpp stringr

LinkingTo (1)

Rcpp

Suggests (3)

covrlatticetestthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

808direct

706indirect

and 760 more packages.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Hadley Wickham

Author, Maintainer

Authors (1)

Hadley Wickham

Author, Maintainer

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.4.5Latest
2025-11-12 · current release · diff ↗
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
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.4.4
2020-04-09 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.4.3
2017-12-11 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.4.2
2016-10-22 · diff ↗
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16

Show 14 earlier events

1.4.1
2014-12-06 · diff ↗
1.4
2014-04-23 · diff ↗
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
1.2.2
2012-12-04 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.2.1
2012-01-10 · diff ↗
1.2
2011-11-18 · diff ↗
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
1.1
2011-01-04 · diff ↗
R
R 2.12.0 released · 2010-10-15
1.0
2010-09-10
R
R 2.11.0 released · 2010-04-22

Package metadata

First published: 2010-09-10
Total releases: 11 / 16 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.1
Bundled data: 10.0 KB / 3 files
Download size: 37 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("reshape2")

Format

Wickham, H. (2025). reshape2: Flexibly Reshape Data: A Reboot of the Reshape Package (Version 1.4.5) [Computer software]. https://doi.org/10.32614/CRAN.package.reshape2

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 reshape2 version 1.4.5 [Data set]. HJJB, LLC. Data release v2026-08-17. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-17, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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