PROJ 9.8.0

Updates

• Database: update to EPSG v12.049 (#4671)

• Database: update ESRI records to ArcGIS Pro 3.6 (#4622)

• Support for Canadian vertical references MTM CGVD2013 epoch 1997, 2002, 2010 and
  UTM CGVD28 epoch 1997, 2002, 2010 (#4623)

• createOperationsCompoundToGeog(): improvement to make "PNG94 / PNGMG94 zone 54 + Kumul
  34 height" to "WGS 84 (G2139)" perform vertical transformation (#4624)

• Remove hardcoding of 'ETRS89-NOR [EUREF89]' cases and generalize it to other ETRS89-XXX
  cases (#4625)

• Database: create ESRI aliases for geodetic_datum and geodetic_crs even if they are the
  same as EPSG ones (#4626)

• Use Emscripten fetch in networkfilemanager (#4627)

• ProjectedCRS::identify(): do not return CRS whose ellipsoid is totally different from the input one (#4635)

• projinfo added as a library function. This installs a new header: projapps_lib.h. (#4646)

• respect CRS_EXTENT_USE=NONE for ConcatenatedOperations (#4652)

• Add support for Equidistant Cylindrical ellipsoidal method (EPSG:1028) (#4656)

• Update proj_symbol_rename.h (#4657)

• WKT1 importer: deal with 'VERT_CS["Geoid 2012A",' (#4659)

• Generate correct library name in proj.pc (#4660)

• Derived projected CRS related improvements (#4667)

• ETRS89-xxx to ETRS89-yyy related improvements (#4668)

• createCoordinateOperation(): tune computed accuracy of a concatenated op within ETRS89 (#4670)

• createOperationsCompoundToGeog(): discard 2D-only transformations from interpolation
  3D CRS to target 3D CRS (#4677)

Bug Fixes

• CRS identification: fix issue when identifying WKT from older EPSG releases with newer
  ones where the ETRS89-XXX national datums have been added (#4600)

• fix normalizeForVisualization to skip extent checks for axis-swap operations (#4632)

• Improvements to TRACE_FETCH debug messages (#4645)

• tmerc spherical: fix numeric instability at lat=lat_0 (#4674)

PROJ 9.7.1

Updates

• Enable transformations_czechia.sql (#4578)

• Update to EPSG v12.029 (#4586)

Bug Fixes

• createOperations(): fix compound to compound when vertical CRS definition is equivalent but not strictly identical (#4579)

• createOperations(): fix compound to compound when horizontal CRS of … (#4582)

• projinfo: make it honour -k crs (#4592)

• proj_clone(): fix insufficient propagation of FORCE_OVER=YES (#4595)

• BoundCRS::identify: fix creation of an invalid BoundCRS (that can cause later crashes) for CRS based on 'NTF (Paris)' (#4601)

• WKT/PROJJSON datum ensemble import: allow no members (#4615)

PROJ 9.7.0

Updates

• Implement 'exact' authalic latitude->geographic latitude and use it in +proj=aea/cea/laea/eqearth/healpix/rhealpix (#4441)

• Implement uniform conversions between auxiliary latitudes (#4446)

• WKT2 parser: recognize DEFININGTRANSFORMATION (but ignore it) (#4484)

• Database: add values from alias_name table that were removed in older EPSG releases, to improve
  recognizing old WKT strings (#4490)

• proj_trans_bounds(): sample points within the source grid to avoid missing extent such as world-wide
  coverage from EPSG:4326 to ESRI:54099 (Spilhaus) (#4513)

• Enable -Wimplicit-fallthrough, -Wdeprecated-copy-dtor, -Wweak-vtables,
  -Wdocumentation-unknown-command when possible (#4516)

• Geostationary projection: speed up inverse spherical and ellipsoidal computation (#4523)

• WKT importer: better error message when BBOX is invalid (e.g south_lat > north_lat) (#4525)

• Added proj_geod_direct for PJ trasformation object (#4532)

• Support exporting Mercator (Spherical) on a sphere as Mercator_1SP in WKT1 (#4555)

• Database: update to EPSG v12.022 (#4562)

Bug Fixes

• proj_trans_bounds(): avoid erroring out, in some cases, when PJ* object is directly constructed
  from a PROJ pipeline (#4512)

• Fix issue related to D_Unknown_based_on_WGS_84_ellipsoid datum name (#4515)

• proj_trans_bounds(): fix 9.6.2 regression when going from long/lat crossing antimeridian to
  projected (#4526)

• opt_parse: avoid potential heap-buffer-overflow when parsing non-ASCII characters (affect
  cct and gie) (#4530)

• gie: fix memory leak on non existing input file (#4531)

• Database: referene nl_nsgi_nllat2018.tif and nl_nsgi_bongeo2004.tif grids (#4534)

• Fixes related to WKT import/export of DerivedGeodetic/GeographicCRS (#4536)

• Fix tolower()/toupper() implementation to not lead to undefined behavior (#4539)

• IAU2015 CRS: fix wrong code for coordinate system of North Polar and South Polar CRSs (#4545)

• createOperations(): fix a case involving 2 CompoundCRS, one with TOWGS84, and the 2
  verticalCRS differing by units (#4552)

• On SQLite query error, show first the error msg than the sql query (#4553)

• Allow geodesic inverse for meridional points on prolate ellipsoid (#4560)

PROJ 9.6.2

Updates

• Update EPSG to 12.013

Bug Fixes

• Database: change ESRI deprecated records back to their deprecated state (#4519)

• ProjectedCRS::identify(): more robust identification of old ESRI names using _IntlFeet (#4518)

• Fix issue related to D_Unknown_based_on_WGS_84_ellipsoid datum name (#4514)

• proj_trans_bounds(): sample points within the source grid to avoid missing extent such as world-wide coverage from EPSG:4326 to ESRI:54099 (Spilhaus) (#4513)

• proj_trans_bounds(): avoid erroring out, in some cases, when PJ* object is directly constructed from a PROJ pipeline (#4512)

PROJ 9.6.1

Updates

• Update EPSG to 12.012 (#4498)

• Add an option to ship PDB files (#4505)

Bug Fixes

• Deal with South Orientated TMerc presented as regular TMerc but with Scale_Factor=-1 (#4427)

• Add missing 'limits' and 'algorithm' includes (#4444)

• CMake: avoid detection of C23 #embed on too old compilers (#4463)

• createOperations(): for NAD83(CSRS)[x] to NAD83(CSRS)[y], do not go through NAD83 (#4467)

• Add missing include for uint32_t on Windows with gcc 15.1 (#4478)

• getGeoidModels: use vertical_crs.datum_code to get vcrss that uses different units (#4480)

• FileManager::open_resource_file(): honour known URLs from grid_alternatives that don't point to cdn.proj.org (#4481)

• Database: update ESRI to ArcGIS Pro 3.5 (#4493)

• createOperationsCompoundToGeog(): avoid bringing non-sensical transformations (#4494)

• Bug correction in Wagner VI projection parameters (#4453)

• C++: Fix bare isnan() to std::isnan() (#4472)

• Database: fix duplicated entries with auxiliary database (#4482)

• Use std::abs instead of abs for NetBSD (#4486)

• Fix Windows build when both EMBED_RESOURCE_FILES and USE_ONLY_EMBEDDED_RESOURCE_FILES are set (#4508)

PROJ 9.6.0

Updates

• projinfo: display whether an operation is time-dependent (#4255)

• Add CMake options EMBED_RESOURCE_FILES and USE_ONLY_EMBEDDED_RESOURCE_FILES for proj.db and proj.ini embedding (#4265, #4274)

• Database: ingest deprecated ESRI names to be able to better import old WKT ESRI (#4282)

• proj_factors(): enhance speed when called repeatedly on same compound or projected CRS (#4289)

• Add Airocean projection (formerly Dymaxion) (#4303)

• createOperations(): Optimization by avoiding database lookups for CRS (typically PROJ strings) using unknown datums (#4320)

• PROJJSON export: for a Projected CRS, add an explicit type=GeographicCRS/GeodeticCRS members to the base_crs member (#4331)

• proj_trans_bounds(): make it work when target CRS is a CompoundCRS (#4333)

• createOperations(): do Helmert transformation in 2D when one of source or target CRS is compound (#4337)

• Map EPSG method 'Vertical Offset by Grid Interpolation (asc)' to +proj=vgridshift (#4344)

• Add support for 'Coordinate Frame rotation full matrix (geocen)' and Coordinate Frame rotation full matrix (geog2D)' methods (#4348)

• Add a CMake EMBED_RESOURCE_DIRECTORY option to embed .tif/.json files in to libproj (#4349, #4373)

• Take into account new EPSG methods 'Cartesian Grid Offsets by TIN Interpolation (JSON)' and 'Vertical Offset by TIN Interpolation (JSON)' (#4353)

• Added an option native_ca to proj.ini and an environment variable PROJ_NATIVE_CA to be able to configure curl to use the operating system CA store. (#4356)

• Database: add an optional step_direction column to the concatenated_operation_step table (#4357)

• Database: replicate EGM2008 grid transformation record to WGS 84 realizations (#4363)

• Improve ETRFxxx to ETRFyyy, and WGS 84 (xxx) to WGS 84 (yyy) (#4364)

• Build: Update to C++17 version (#4366, #4369)

• Add bash completion script for projinfo (#4371)

• Dispatch content of 4D_api.cpp into multiple .cpp files (#4393)

• Add proj_trans_bounds_3D() (#4394)

• Database: add a engineering_datum and engineering_crs tables; import few related EPSG records (#4396)

• NKG transformations: Add support for EUREF-FIN in Finish transformations (#4399)

• Add Spilhaus projection (#4401)

• Export ESRI:54099 WGS_1984_Spilhaus_Ocean_Map_in_Square as PROJ string (#4402)

• Database: update to EPSG v12.004 (#4413)

• proj_download_file(): invalidate in-memory caches related to downloaded file (for the current context) (#4414)

Bug Fixes

• createObjectsFromName(): be more tolerant about N/S vs North/South, absence of zone or height (#4318)

• createFromPROJString: avoid repeated openings of proj.db and proj.ini and lookup of 'epsg' (#4334)

• Debugging/internals: append sub-grid index to grid name when opening a multi-grid TIFF file (#4381)

• createOperations(): use more appropriate operation when using a 'PROJ {grid_name}' geoid model, based on matching the vertical datum (#4379)

• proj_clone(): properly propagate errorIfBestTransformationNotAvailable and other flags from source object (#4382)

• Inverse +proj=cass: fix non-convergence on inputs where easting=false_easting or northing=false_northing (#4386)

• Fix typo in parameter for ITRF97 in ITRF2014 file (#4408)

• Retry on "SSL connection timeout" (#4419)

PROJ 9.5.1

Updates

• Database: update to EPSG v11.022 (#4254, #4275, #4297, #4312)

• Speed-up dramatically proj.db build time (#4280)

• Database: ingest deprecated ESRI names to be able to better import old WKT ESRI (#4282)

Bug fixes

• findsOpsInRegistryWithIntermediate(): Restrict to using known source/target CRS that have the same originating authority (#4252)

• isTimeDependent(): Do not mark "static" Coordinate Frame helmert transformations as time-dependent, only time-dependent ones (#4259)

• Fix clang-19 "warning: empty paragraph passed to '@throw' command [-Wdocumentation]" (#4263)

• WKT importer: fix nullptr dereference on invalid VERTCS[] (#4266)

• Fixed sql_filelist.cmake relative path issue (#4296)

• Fail consistently on network error and grid transformations (#4302)

• Fix -Wshadow warnings between parammappings.cpp and singleoperation.cpp with unity builds (#4304)

• Removed leftover setting of CMAKE_REQUIRED_FLAGS (#4322)

• WKT1 ESRI export: fix wrong mapping of Lambert Cylindrical Equal Area to Behrmann (#4328)

• Numerous documentation fixes (#4248, #4267, #4291, #4293)

PROJ 9.5.0

PROJ 9.5.0 Release Notes

Updates

• Database: add constraint for unicity of CRS and operation names (#4071)

• Make a few more functions that accept a PJ* to actually acccept a const PJ* (#4074)

• Database: Increase consistency in trigger checks (#4080)

• Speed-up +proj=cart +inv (#4087)

• Added EPSG:9656 "Cartesian Grid Offsets" operation method, and imported related records (#4094)

• Add a WKTParser::grammarErrorList() method so that proj_create_from_wkt() can behave as documented (#4108)

• CRS::stripVerticalComponent(): Redirect it to demoteTo2D(std::string(), nullptr) (#4127)

• Add proj_context_set_user_writable_directory() to public API (#4144)

• CMake: for Windows builds, defaults PROJ DLL to be just proj_${PROJ_MAJOR_VERSION}.dll (#4167)

• Add toWGS84AutocorrectWrongValues() method and use it in PROJ.4 and WKT1 CRS import (#4172)

• WKT import: add support for Oracle WKT "Albers_Conical_Equal_Area" spelling (#4181)

• Limit number of C++ exceptions thrown & caught internally (#4183)

• Database: update to EPSG 11.016 (#4241)

• CMake: add option EMBED_PROJ_DATA_PATH (#4207)

• Add SEA Inverse projection (#4211)

• projinfo: Add 2 args equivalent to usage of -s and -t (#4218)

• CMake: add TESTING_USE_NETWORK configure option (#4220)

• Add PROJ_ERR_COORD_TRANSFM_MISSING_TIME and proj_coordoperation_requires_per_coordinate_input_time() (#4221)

• Add new Conversion "Local Orthographic" (#4228, #4229)

• Add data/ITRF2020 with ITRF2020 to ITRFother, and ITRF2020 plate motion models (#4235)

Bug Fixes

• Fix imoll and imoll_o zone calculations to correct inverse transformations near the "seams" (#4159)

• Fix wrong EPSG conversion code for UTM south (#4166)

• BoundCRS::exportToPROJ(): handle case of NADCON conus grid (#4168)

• +proj=gridshift: make projected grids work with PROJ_NETWORK=ON (#4174)

• createOperations(): make it work when transforming from/to a CompoundCRS with a DerivedVerticalCRS with ellipsoidal height (#4176)

• Support default context as nullptr in CoordinateTransformer (#4177)

• cct: emit error message and return error code when not being able to open input file (#4200)

• Fix race condition surrounding DB reopening during fork (#4231)

• GeographicBoundingBox::create(): accept degenerate bounding box reduced to a point or a line (#4237)

• createOperation(): tune so that ITRF2000->ETRS89 does not return only NKG grid based operations but also time-dependent Helmert (#4244)

PROJ 9.4.1

Updates

• Database: update to EPSG v11.006 (#4086)

• Database: update ESRI dataset to ArcGIS Pro 3.3 (#4143)

Bug fixes

• DatabaseContext::lookForGridInfo(): do not trigger network activity in
  PROJ_GRID_AVAILABILITY_KNOWN_AVAILABLE mode when all grids are known (#4090)

• Retry "Connection reset by peer" (#4107)

• Use unique names for NKG transformations (#4111)

• proj_create()/proj_create_from_database(): recall CRS AUTH:CODE in error message (#4114)

• DerivedProjectedCRS: deal with lack of explicit CS in BASEPROJCRS in WKT (#4139)

• proj_symbol_rename.h: update with current symbols (#4145)

• Improve detection of compatible/incompatible celestial bodies (#4150)

PROJ 9.4.0

Updates

• Add support for transformations involving coordinate epoch changes (PointMotionOperation), specifically for Canadian NAD83(CSRS)(#3884)
• SSL_OPTIONS: set SSL options on Curl library (#3936)
• Add support for unity builds (#3962)
• Added ability to install *.tif if present in data (#3970)
• createOperationsCompoundToGeog(): tune selection logic when --grid-check known_available is specified (#3990)
• Increase CMake minimum version from 3.9 to 3.16 (#3997)
• CMake: use FetchContent to get googletest-1.12.1 (#4006)
• CMake: Replace custom FindSqlite3 with FindSQLite3 built-in (#4007)
• tpeqd: use numerically stable formula for computing the central angle from (phi_1, lam_1) to (phi_2, lam_2) (#4009)
• Move content of proj_experimental.h to proj.h (#4019)
• Add +proj=mod_krovak projection method for Modified Krovak that applies to S-JTSK/05 in the Czech Republic (#4021)
• PROJString formatter optimizer: simplify pipelines doing [Modified]Krovak (South West) <--> [Modified]Krovak (East North) by just doing an axis swap (#4034)
• +proj=gridshift: enhance to support grids referenced in projected CRS, and with easting_offset/northing_offset corrections (#4038)
• Tune concatenated operation instanciation, reference CR2005 geoid for Czechia and add (disabled by default) records for Czechia S-JTSK/05 based transformations (#4044)
• Database: update to EPSG v11.004 (#4062)

Bug fixes

• Fix missing symbols at link time for Windows target in Visual Studio (#3984)
• Improve error message in axisswap (#3885
• Avoid convergence errors in +proj=gridshift when using biquadratic interpolation (#3985)