R Observatory: Metrics for proj4 version 1.0-15

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

proj4

1.0-15

A simple interface to the PROJ.4 cartographic projections library

5packages depend

75.9Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Simon UrbanekFirst published 2007-06-0714 releasesCRAN page ↗GitHub ↗

A simple interface to lat/long projection and datum transformation of the PROJ.4 cartographic projections library. It allows transformation of geographic coordinates from one projection and/or datum to another.

Install

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

install.packages("proj4", 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("s-u/proj4")

Development version from s-u/proj4. 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-proj4

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-proj4

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

13OK

Slowest check: 4.4 min · r-devel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

0

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
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

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

Downloads

75.9K

CRAN downloads in the past year

Rank #1,785 · ~208/day · ~6.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

3.9K30 days

12.9K90 days

75.9K1 year

Compare downloads with other packages →

Also on1.6K r2u17.8K conda_forge286 bioconda81 c2d4u

Repository

GitHub ↗ s-u/proj4

3Stars

2Forks

0Open issues

0Open PRs

0Releases

48Commits

2Contributors

48 commits · Last activity 2025-03-21

Stars over time

2024-01-17 · 32026-07-07 · 3

Repository practices

Upstream repositoryBeta

Checks run against github.com/s-u/proj4 on 2026-08-16.

No development-tooling practices detected in the upstream repository.

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

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.0.0

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

1indirect

BIOMASS GeoRange angstroms metR ursa

Code & Tests

People & History

People (1)

Maintainer (1)

Simon Urbanek

Author, Maintainer, Copyright holder

Authors (1)

Simon Urbanek

Author, Maintainer, Copyright holder

Copyright holders (1)

Simon Urbanek

Author, Maintainer, Copyright holder

Package Timeline

14 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
1.0-15Latest
2025-03-21 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0-14
2024-01-14 · diff ↗
1.0-13
2023-08-17 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.0-12
2022-11-30 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.0-11
2022-01-31 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.0-10.1
2021-01-26 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.0-10
2020-03-02 · diff ↗
1.0-8.1
2019-09-07 · diff ↗
R
R 3.6.0 released · 2019-04-26

Show 23 earlier events

R
R 3.5.0 released · 2018-04-23
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
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
1.0-8
2012-08-05 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.0-7
2011-12-11 · diff ↗
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
1.0-6
2011-02-01 · diff ↗
1.0-5
2011-01-17 · diff ↗
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
R
R 2.8.0 released · 2008-10-20
R
R 2.7.0 released · 2008-04-22
R
R 2.6.0 released · 2007-10-03
1.0-4
2007-06-10 · diff ↗
1.0-3
2007-06-07
R
R 2.5.0 released · 2007-04-24

Package metadata

First published: 2007-06-07
Total releases: 14 / 19 yrs
License: GPL-2 OSI
Minimum R: ≥ 2.0.0
Download size: 42 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("proj4")

Format

Urbanek, S. (2025). proj4: A simple interface to the PROJ.4 cartographic projections library (Version 1.0-15) [Computer software]. https://doi.org/10.32614/CRAN.package.proj4

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 proj4 version 1.0-15 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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