proj
PROJ - Cartographic Projections and Coordinate Transformations Library
Science Score: 77.0%
This score indicates how likely this project is to be science-related based on various indicators:
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✓CITATION.cff file
Found CITATION.cff file -
✓codemeta.json file
Found codemeta.json file -
✓.zenodo.json file
Found .zenodo.json file -
✓DOI references
Found 3 DOI reference(s) in README -
✓Academic publication links
Links to: zenodo.org -
✓Committers with academic emails
13 of 189 committers (6.9%) from academic institutions -
○Institutional organization owner
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○JOSS paper metadata
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○Scientific vocabulary similarity
Low similarity (12.7%) to scientific vocabulary
Keywords from Contributors
Repository
PROJ - Cartographic Projections and Coordinate Transformations Library
Basic Info
- Host: GitHub
- Owner: OSGeo
- License: other
- Language: C++
- Default Branch: master
- Homepage: https://proj.org
- Size: 288 MB
Statistics
- Stars: 1,881
- Watchers: 78
- Forks: 849
- Open Issues: 88
- Releases: 39
Metadata Files
README.md
PROJ
PROJ is a generic coordinate transformation software, that transforms coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic transformations.
For more information on the PROJ project please see the web page at:
The PROJ mailing list can be found at:
https://lists.osgeo.org/mailman/listinfo/proj/
See the NEWS.md file for changes between versions.
The following command line utilities are included in the PROJ package:
proj: for cartographic projection of geodetic coordinates.cs2cs: for transformation from one CRS to another CRS.geod: for geodesic (great circle) computations.cct: for generic Coordinate Conversions and Transformations.gie: the Geospatial Integrity Investigation Environment.projinfo: for geodetic object and coordinate operation queries.projsync: for synchronizing PROJ datum and transformation support data.
More information on the utilities can be found on the PROJ website.
Installation
Consult the Installation page of the official documentation. For builds on the master branch, install.rst might be more up-to-date.
Distribution files and format
Sources are distributed in one or more files. The principle elements
of the system are stored in a compressed tar file named proj-x.y.z.tar.gz where
"x" will indicate the major release number, "y" indicates the minor release
number, and "z" indicates the patch number of the release.
In addition to the PROJ software package, distributions of datum
conversion grid files and PROJ parameter files are also available.
The grid package is distributed under the name proj-data-x.y.zip,
where "x" is the major release version and "y" is the minor release
version numbers. The resource packages can be downloaded from the
PROJ website.
More info on the contents of the proj-data package can be found at the PROJ-data GitHub repository.
The resource file packages should be extracted to PROJ_LIB
where PROJ will find them after installation. The default location of
PROJ_LIB on UNIX-based systems is /usr/local/share/proj but it may
be changed to a different directory. On Windows you have to define
PROJ_LIB yourself.
As an alternative to installing the data package on the local system, the resource files can be retrieved on-the-fly from the PROJ CDN. A network-enabled PROJ build, will automatically fetch resource files that are not present locally from the CDN.
Citing PROJ in publications
See CITATION
Owner
- Name: Open Source Geospatial Foundation
- Login: OSGeo
- Kind: organization
- Email: info@osgeo.org
- Location: United States of America
- Website: https://www.osgeo.org
- Repositories: 40
- Profile: https://github.com/OSGeo
Empower everyone with open source geospatial
Citation (CITATION)
To cite PROJ in publications use:
PROJ contributors (2025). PROJ coordinate transformation software
library. Open Source Geospatial Foundation. URL https://proj.org/.
DOI: 10.5281/zenodo.5884394
A BibTeX entry for LaTeX users is
.. code-block:: latex
@Manual{,
title = {{PROJ} coordinate transformation software library},
author = {{PROJ contributors}},
organization = {Open Source Geospatial Foundation},
year = {2025},
url = {https://proj.org/},
doi = {10.5281/zenodo.5884394},
}
Committers
Last synced: 8 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Even Rouault | e****t@s****m | 2,600 |
| Frank Warmerdam | w****m@p****m | 897 |
| Kristian Evers | k****s@g****m | 795 |
| Thomas Knudsen | t****n@s****k | 170 |
| Mike Taves | m****s@g****m | 158 |
| Howard Butler | h****d@h****o | 114 |
| Charles Karney | c****s@k****m | 109 |
| Javier Jimenez Shaw | j1@j****m | 72 |
| Kurt Schwehr | s****r@g****m | 43 |
| Elliott Sales de Andrade | q****t@g****m | 40 |
| Bas Couwenberg | s****c@x****l | 40 |
| Nyall Dawson | n****n@g****m | 38 |
| Alan D. Snow | a****1@g****m | 34 |
| Sean McBride | s****n@r****m | 34 |
| Mateusz Łoskot | m****z@l****t | 31 |
| Martin Desruisseaux | m****x@g****m | 30 |
| 積丹尼 Dan Jacobson | j****i@j****g | 27 |
| Kai Pastor | d****t@d****e | 22 |
| Didier Richard | d****d@i****r | 21 |
| Micah Cochran | m****n | 14 |
| Brendan Jurd | d****s@g****m | 14 |
| Bojan Šavrič | b****c@e****m | 12 |
| julien2512 | m****n@g****m | 12 |
| Sebastian Val | S****l@j****v | 11 |
| George Ouzounoudis | g****k@g****m | 11 |
| Aaron Puchert | a****t@s****m | 11 |
| Chris Mayo | a****x@g****m | 9 |
| Andrey Kiselev | d****n@a****u | 8 |
| dependabot[bot] | 4****] | 7 |
| Jerome St-Louis | j****e@e****m | 6 |
| and 159 more... | ||
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 6 months ago
All Time
- Total issues: 284
- Total pull requests: 955
- Average time to close issues: 5 months
- Average time to close pull requests: 7 days
- Total issue authors: 169
- Total pull request authors: 58
- Average comments per issue: 3.12
- Average comments per pull request: 1.11
- Merged pull requests: 812
- Bot issues: 0
- Bot pull requests: 26
Past Year
- Issues: 85
- Pull requests: 362
- Average time to close issues: 3 days
- Average time to close pull requests: 2 days
- Issue authors: 66
- Pull request authors: 27
- Average comments per issue: 2.01
- Average comments per pull request: 0.86
- Merged pull requests: 306
- Bot issues: 0
- Bot pull requests: 1
Top Authors
Issue Authors
- jidanni (23)
- rouault (16)
- mwtoews (12)
- jjimenezshaw (12)
- aharondavid (10)
- dvargas74 (8)
- alionteo (6)
- snowman2 (6)
- phaarnes (5)
- Jochem-L (4)
- barry-gallagher (4)
- nyalldawson (4)
- djhoese (3)
- gabrielwaibel (2)
- loftyscholar (2)
Pull Request Authors
- rouault (680)
- jidanni (71)
- jjimenezshaw (54)
- mwtoews (39)
- kbevers (33)
- github-actions[bot] (15)
- dependabot[bot] (12)
- jerstlouis (6)
- cffk (5)
- AlexBass05 (5)
- jgpallero (4)
- Olexandr88 (4)
- sebastic (4)
- seanm (4)
- pjonsson (3)
Top Labels
Issue Labels
Pull Request Labels
Packages
- Total packages: 1
- Total downloads: unknown
- Total dependent packages: 5
- Total dependent repositories: 245
- Total versions: 7
anaconda.org: proj
PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic transformations.
- Homepage: https://proj.org/
- License: MIT
-
Latest release: 9.3.1
published about 2 years ago
Rankings
Dependencies
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