Issues

• Enable operation chaining from EngineeringCRS through registered operations

  feature request
  OSGeo/PROJ#4894 · Filter by author phaarnes opened on Oct 8, 2026
  1

• normalizeForVisualization() drops coordinate epochs from coordinate operations

  bug
  OSGeo/PROJ#4890 · Filter by author arkIX6071 opened on Oct 7, 2026
  1

• DERIVEDPROJCRS with 3D Helmert deriving conversion: transform to base CRS works, but to EPSG:4326 fails with "Mismatched units"

  bug
  OSGeo/PROJ#4889 · Filter by author scottmcnab opened on Oct 7, 2026

• cs2cs ignores attached epoch when source or target are compound CRS

  bug
  OSGeo/PROJ#4886 · Filter by author snt0 opened on Oct 3, 2026
  1

• proj_normalize_for_visualization() does not normalise an EngineeringCRS, and Cartesian Grid Offsets ignores its axis order

  bug
  OSGeo/PROJ#4876 · Filter by author phaarnes opened on Oct 1, 2026

• WKT1_ESRI is not honoured for spherical grid

  bug
  OSGeo/PROJ#4875 · Filter by author HGS-JoeDecker opened on Sep 29, 2026

• Support EPSG polynomial transformation methods (9645–9651)

  feature request
  OSGeo/PROJ#4867 · Filter by author john-haugland opened on Sep 25, 2026
  2

• PROJJSON export of an inverted Helmert transformation keeps the forward parameters, so re-importing it applies the shift in the wrong direction

  bug
  OSGeo/PROJ#4866 · Filter by author john-haugland opened on Sep 25, 2026

• Public C API to resolve ellipsoid parameters from a PROJ string (incl. +R_A, +R_lat_a…)

  OSGeo/PROJ#4864 · Filter by author HugoFara opened on Sep 23, 2026
  2

• Heap-buffer-overflow in GTiffGrid::valuesAt after remote GeoTIFF layout change (src/grids.cpp)

  bug
  OSGeo/PROJ#4859 · Filter by author shootduck opened on Sep 19, 2026

• Heap-buffer-overflow in NetworkFile::read multi-chunk range handling (src/networkfilemanager.cpp)

  bug
  OSGeo/PROJ#4858 · Filter by author shootduck opened on Sep 19, 2026

• Heap-buffer-overflow in NTv2Grid::valueAt line-buffer sizing (src/grids.cpp)

  bug
  OSGeo/PROJ#4857 · Filter by author shootduck opened on Sep 19, 2026

• Heap-buffer-overflow in GTiffGrid offset-metadata indexing (src/grids.cpp)

  bug
  OSGeo/PROJ#4856 · Filter by author shootduck opened on Sep 19, 2026

• Expose getAliases in C API

  feature request
  OSGeo/PROJ#4854 · Filter by author jjimenezshaw opened on Sep 16, 2026

• find_dependency SQLite3

  OSGeo/PROJ#4851 · Filter by author redlars opened on Sep 14, 2026
  1

• always_xy=True leaves a residual axisswap for Geographic3D <-> VerticalCRS pipelines (normalizeForVisualization)

  bug
  OSGeo/PROJ#4848 · Filter by author phaarnes opened on Sep 8, 2026

• Ten GIGS tests disabled since ~2018; the 52xx ones appear to fail on +init= syntax rather than accuracy

  OSGeo/PROJ#4823 · Filter by author isaacsight opened on Aug 21, 2026

• -fvisibility=hidden needs whole classes exported, not individual methods

  bug
  OSGeo/PROJ#4806 · Filter by author aitap opened on Aug 4, 2026

• Migrate support of OGCURN from GDAL to PROJ

  feature request
  OSGeo/PROJ#4801 · Filter by author SunBlack opened on Jul 16, 2026

• Support for generic Snyder Equal-Area Projection for Polyhedral Globes

  feature request
  OSGeo/PROJ#4794 · Filter by author jerstlouis opened on Jun 26, 2026

• Scale of (r)HEALPix coordinate space

  bug
  OSGeo/PROJ#4789 · Filter by author jerstlouis opened on Jun 19, 2026
  7

• Wrong usage of POSITION_INDEPENDENT_CODE for resources

  OSGeo/PROJ#4786 · Filter by author AlexandrePTJ opened on Jun 3, 2026
  3

• build instructions are missing from release tarballs

  bug
  OSGeo/PROJ#4783 · Filter by author gdt opened on May 23, 2026

• Proposal: Support for Trapezoidal Map Projections in PROJ

  feature request
  OSGeo/PROJ#4776 · Filter by author gwahak opened on May 13, 2026
  3

• Expose EXE_SQLITE3 as CMake variable in order to allow using custom SQLite3 binaries

  feature request
  OSGeo/PROJ#4768 · Filter by author aleksandaratanasov opened on Apr 29, 2026
  1