Issues

• Upgrading proj4j to PROJ 9.8.1 — a plan we'd like your feedback on

  locationtech/proj4j#136 · Filter by author emilevictor opened on Aug 25, 2026
  1

• Support for projjson format?

  feature
  locationtech/proj4j#122 · Filter by author jiayuasu opened on Oct 10, 2025
  3

• Missing EPSG:9883

  feature
  locationtech/proj4j#120 · Filter by author robinse-ge opened on May 27, 2025
  3

• Incorrect transformation when longitude >180

  enhancement
  locationtech/proj4j#118 · Filter by author jdries opened on Apr 4, 2025
  2

• Will there be support for cct.

  feature
  locationtech/proj4j#114 · Filter by author VadOs1 opened on Sep 27, 2024
  2

• Expose area of use

  feature
  locationtech/proj4j#113 · Filter by author jdries opened on Sep 9, 2024
  1

• gtx files cannot be used?

  question
  locationtech/proj4j#112 · Filter by author robertoricotti opened on Jun 1, 2024
  1

• Datum.isEqual maybe have a bug

  bug
  locationtech/proj4j#110 · Filter by author Accelerator-Li opened on Apr 8, 2024

• rhealpix is not supported

  feature
  locationtech/proj4j#109 · Filter by author ruixiang-liu opened on Mar 7, 2024
  1

• altitude not working when Projecting

  feature
  locationtech/proj4j#108 · Filter by author NeedNot opened on Feb 20, 2024
  1

• Support for polar stereographic with alternate scales

  enhancement
  locationtech/proj4j#106 · Filter by author gwlucastrig opened on Dec 8, 2023
  4

• Reprojection results seem to be too imprecise

  bug
  locationtech/proj4j#105 · Filter by author julienrf opened on Nov 2, 2023

• Transforming from "EPSG:4326" to "EPSG:3857" results in precision error

  bug
  locationtech/proj4j#104 · Filter by author mvodas opened on Aug 21, 2023

• VN2000 Error Exception in thread "main" java.lang.IllegalStateException: Latitude is out of range: 9738.514891355962

  bug
  locationtech/proj4j#103 · Filter by author longtran84 opened on Jul 1, 2023

• Improve proj4j tests to reflect the recent changes and the moved out EPSG resources

  enhancement
  locationtech/proj4j#96 · Filter by author pomadchin opened on Dec 13, 2022
  3

• ntv2 grid support

  enhancement
  locationtech/proj4j#89 · Filter by author steve-devore opened on Nov 17, 2022
  19

  

• Use of PROJ string or WKT string is prone to definition ambiguities

  enhancement
  locationtech/proj4j#69 · Filter by author jfbourgon opened on Nov 5, 2020

• 1 degree == 1 metre according to units

  locationtech/proj4j#68 · Filter by author dzfranklin opened on Oct 20, 2020

• More flexible readEpsgFromParameters function

  bugenhancement
  locationtech/proj4j#65 · Filter by author pomadchin opened on Aug 15, 2020

• NullPointerException on transform() when using CoordinateReferenceSystem.CS_GEO

  locationtech/proj4j#56 · Filter by author oshai opened on Jan 30, 2020

• Use of proj's sqlite database

  locationtech/proj4j#53 · Filter by author willcohen opened on Sep 23, 2019
  2

• Provide best-in-class WKT -> Proj4 conversion routines

  enhancementhelp wanted
  locationtech/proj4j#49 · Filter by author metasim opened on Aug 25, 2019
  9

• Projection.initialize() method

  locationtech/proj4j#40 · Filter by author paulushub opened on Aug 15, 2019
  6

• LandsatProjection: Inverse?

  locationtech/proj4j#39 · Filter by author paulushub opened on Aug 15, 2019
  1

• ProjCoordinate: Z ordinate

  locationtech/proj4j#37 · Filter by author paulushub opened on Aug 12, 2019
  1