LocationTech Proj4J
As a port of an existing library, LocationTech Proj4J has the same scope as its ancestor Proj.4 - to implement mathematical formulae for converting coordinates between different reference systems. It narrowly focuses on converting individual coordinates; while this functionality can be used to implement conversions for higher-level structures such as raster and feature datasets, dependent projects are left to implement these operations themselves and Proj4J is not dependent on any specific representation of rasters or features.
The "native" representation of coordinate reference system parameters is the proj.4 parameter syntax, and facilities for interpreting other representations such as EPSG codes are within the scope for the project.
Basics
- Project ID: locationtech.proj4j
- PMI: https://projects.eclipse.org/projects/locationtech.proj4j
- Website: https://projects.eclipse.org/projects/locationtech.proj4j
- Download CSV: Commits , Issues , Reviews , IP Lab requests
- Time range for commits: 2025-12-02 21:34:59 to 2026-08-03 00:20:32.
- Time range for issues: 2025-10-10 17:33:42 to 2026-04-27 11:40:22.
- Time range for reviews: 2025-12-02 16:28:30 to 2026-08-07 00:19:01.
Active repositories
| Repository | Commits | Reviews | Issues |
|---|---|---|---|
| https://github.com/locationtech/proj4j | 11 | 10 | 4 |
Activity - commits
There have been 11 commits made by 4 people on 1 repositories over the last 12 months.
Activity - issues
There have been 4 issues submitted by 3 people on 1 repositories over the last 12 months.
Activity - reviews
There have been 10 reviews submitted by 5 people on 1 repositories over the last 12 months.
The EMO oversees the lifecycle of Eclipse projects, trademark and IP management, and provides a governance framework and recommendations on open source best practices.
See the project’s PMI page at https://projects.eclipse.org/projects/locationtech.proj4j
Releases
- 1.4.3 (2026-06-02) – see artefacts
- 1.4.2 (2026-05-24) – see artefacts
- 1.4.1 (2025-06-15) – see artefacts
- 1.4.0 (2025-03-31) – see artefacts
- 1.3.0 (2023-05-30) – see artefacts
- 1.2.3 (2023-01-25) – see artefacts
- 1.2.1 (2022-12-12) – see artefacts
- 1.2.2 (2022-12-12) – see artefacts
- 1.2.0 (2022-12-04) – see artefacts
- 1.1.5 (2022-03-05) – see artefacts
- 1.1.4 (2021-11-03) – see artefacts
- 1.1.3 (2021-06-17) – see artefacts
- 1.1.2 (2021-04-12) – see artefacts
- 1.1.1 (2020-03-09) – see artefacts
- 1.1.0 (2019-10-15) – see artefacts
- 1.0.0 (2019-03-06) – see artefacts
Reviews
- LocationTech Proj4J 2027.08 Progress (2027-08-04) – see review
- LocationTech Proj4J 2026.08 Progress (2026-08-06) – see review
- LocationTech Proj4J 1.1.0 Release (2019-10-02) – see review
- LocationTech Proj4J 1.0.0 Release (2019-05-01) – see review
IP Lab requests
- 2026-08-05 - maven/mavencentral/org.opengis/geoapi/3.0.2
- 2026-08-05 - maven/mavencentral/org.opengis/geoapi/3.0.2 (rm)