R Observatory: Metrics for constants version 2022.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

constants

2022.0Package record

Reference on Constants, Units and Uncertainty

1packages depend

4.2Kdownloads / year

21.4%test coverage

13/13flavors OK

Overview

About

Maintained by Iñaki UcarCRAN page ↗GitHub ↗Issues ↗

CODATA internationally recommended values of the fundamental physical constants, provided as symbols for direct use within the R language. Optionally, the values with uncertainties and/or units are also provided if the 'errors', 'units' and/or 'quantities' packages are installed. The Committee on Data for Science and Technology (CODATA) is an interdisciplinary committee of the International Council for Science which periodically provides the internationally accepted set of values of the fundamental physical constants. This package contains the "2022 CODATA" version, published on May 2024: Eite Tiesinga, Peter J. Mohr, David B. Newell, and Barry N. Taylor (2024) https://physics.nist.gov/cuu/Constants/.

Changes in 2022.0

Update to version 9.0, the 2022 CODATA recommended values.

Package versioning has been aligned with the CODATA versioning scheme.

From NEWS.md in the release

Install

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

install.packages("constants", 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("r-quantities/constants")

Development version from r-quantities/constants. 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-constants

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-constants

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-constants

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 1.9 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2022.0

READMEYes · 189 wordsVignettesNoNEWSYes · 100% structured · mentions 2022.0Citation fileNo

Help pages: 4includes a package overview page
Examples that run: 100%2 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 0%
Help pages citing references: 25%

How these are measured

Downloads

4.2K

CRAN downloads in the past year

Rank #9,739 · ~12/day · ~353/mo

Releases R versions

Daily download trend is not available in this view yet.

38430 days

1K90 days

4.2K1 year

Compare downloads with other packages →

Also on113 r2u10 autocran126 c2d4u

How downloads are counted

Repository

r-quantities/constants ↗Organization: r-quantities

15Stars

0Forks

0Open issues

0Open PRs

5Releases

48Commits

1Commit identities

rr-packageconstantsphysicscran

48 commits · Last activity 2025-09-29

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 0
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2024-08-02 · 152026-07-07 · 15

How these are measured

PracticesBeta

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

Checks run against github.com/r-quantities/constants on 2026-10-22.

Continuous integration (1)

GitHub Actions

Docs source (3)

README.Rmdpkgdown

GitHub Pages site last deployed 2025-09-29

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing constants adds no packages beyond those that come with R.

Depends (1)

R >= 3.5.0

Imports (0)

none

LinkingTo (0)

none

Suggests (4)

errors units quantities testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

SeaSondeR

How these are counted

Code & Tests

Datasets

People & History

People (1)

Iñaki Ucar

Releases (5)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2022.0Latest
record
2025-09-29 · 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
1.0.1
record
2021-02-25 · diff ↗
1.0.0
record
2020-11-11 · diff ↗ ·
added 1 export
syms_with_quantities
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
0.0.2
record
2018-01-08 · diff ↗
0.0.1
record
2017-07-17
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-07-17
Total releases: 5 / 9 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Bundled data: 43 KB / 2 files
Download size: 53 KB

Appears in task views

Chemometrics and Computational Physics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("constants")

Format

Ucar, I. (2025). constants: Reference on Constants, Units and Uncertainty (Version 2022.0) [Computer software]. https://doi.org/10.32614/CRAN.package.constants

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 constants version 2022.0 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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