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<span style="font-family: monospace; font-size: 11px;" class="">PROJ 6 has undergone extensive changes to increase its functional scope from a</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">cartographic projection engine with so-called "early-binding" geodetic datum</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">transformation capabilities to a more complete library supporting coordinate</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">transformations and coordinate reference systems.</span><br style="font-family: monospace; font-size: 11px;" class="">
<br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">As a foundation for other enhancements, PROJ now includes a C++ implementation</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">of the modelisation propopsed by the ISO-19111:2019 standard / OGC Abstract</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">Specification Topic 2: "Referencing By Coordinates", for geodetic reference</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">frames (datums), coordinate reference systems and coordinate operations.</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">Construction and query of those geodetic objects is available through a new C++</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">API, and also accessible for the most part from bindings in the C API.</span><br style="font-family: monospace; font-size: 11px;" class="">
<br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">Those geodetic objects can be imported and exported from and into the OGC</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">Well-Known Text format (WKT) in its different variants: ESRI WKT, GDAL WKT 1,</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">WKT2:2015 (ISO 19162:2015) and WKT2:2018 (ISO 19162:2018). Import and export of</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">CRS objects from and into PROJ strings is also supported. This functionality</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">was previously available in the GDAL software library (except WKT2 support</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">which is a new feature), and is now an integral part of PROJ.</span><br style="font-family: monospace; font-size: 11px;" class="">
<br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">A unified database of geodetic objects, coordinate reference systems and their</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">metadata, and coordinate operations between those CRS is now available in a</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">SQLite3 database file, proj.db. This includes definitions imported from the</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">IOGP EPSG dataset (v9.6.0 release), the IGNF (French national mapping agency)</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">geodetic registry and the ESRI projection engine database. PROJ is now the</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">reference software in the "OSGeo C stack" for this CRS and coordinate operation</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">database, whereas previously this functionality was spread over PROJ, GDAL and</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">libgeotiff, and used CSV or other adhoc text-based formats.</span><br style="font-family: monospace; font-size: 11px;" class="">
<br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">Late-binding coordinate operation capabilities, that takes metadata such as</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">area of use and accuracy into account, has been added. This can avoid in a</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">number of situations the past requirement of using WGS84 as a pivot system,</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">which could cause unneeded accuracy loss, or was not doable at all sometimes</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">when transformation to WGS84 was not available. Those late-binding capabilities</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">are now used by the proj_create_crs_to_crs() function and the cs2cs utility.</span><br style="font-family: monospace; font-size: 11px;" class="">
<br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">A new command line utility, projinfo, has been added to query information about</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">a geodetic object of the database, import and export geodetic objects from/into</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">WKT and PROJ strings, and display coordinate operations available between two</span><br style="font-family: monospace; font-size: 11px;" class="">
<span style="font-family: monospace; font-size: 11px;" class="">CRSs.</span>
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</div>
<div style="font-family: monospace; font-size: 11px;" class="">Download the source distribution here:</div>
<div style="font-family: monospace; font-size: 11px;" class=""><br class="">
</div>
<div style="font-family: monospace; font-size: 11px;" class=""> <a href="https://download.osgeo.org/proj/proj-6.0.0.tar.gz" class="">
https://download.osgeo.org/proj/proj-6.0.0.tar.gz</a></div>
<div style="font-family: monospace; font-size: 11px;" class=""> <a href="https://download.osgeo.org/proj/proj-6.0.0.zip" class="">
https://download.osgeo.org/proj/proj-6.0.0.zip</a></div>
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<br class="">
<div class="">In addition to the new version of PROJ we are also releasing new datum grid</div>
<div class="">packages:</div>
<div class=""><br class="">
</div>
<div class="">proj-datumgrid-europe 1.2:</div>
<div class=""><br class="">
</div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.tar.gz" class="">
https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.tar.gz</a></div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.zip" class="">https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.zip</a></div>
<div class=""><br class="">
</div>
<div class=""> Changes include: Grids covering the UK, France and Sweden.</div>
<div class=""><br class="">
</div>
<div class="">proj-datumgrid-north-america 1.2:</div>
<div class=""><br class="">
</div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.tar.gz" class="">https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.tar.gz</a></div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.zip" class="">https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.zip</a></div>
<div class=""><br class="">
</div>
<div class=""> Changes include: NAD83 -> NAD83(HPGN) grids, GEOIDB12 grids and the</div>
<div class=""> Canadian ntv2_0.gsb grid</div>
<div class=""><br class="">
</div>
<div class="">proj-datumgrid-world 1.0</div>
<div class=""><br class="">
</div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-world-1.0.tar.gz" class="">https://download.osgeo.org/proj/proj-datumgrid-world-1.0.tar.gz</a></div>
<div class=""> <a href="https://download.osgeo.org/proj/proj-datumgrid-world-1.0.zip" class="">
https://download.osgeo.org/proj/proj-datumgrid-world-1.0.zip</a></div>
<div class=""><br class="">
</div>
<div class=""> This is the first version of the world wide package. Currently it only holds</div>
<div class=""> the EGM2008 geoid grid.</div>
</div>
<div style="font-family: monospace; font-size: 11px;" class=""><br class="">
</div>
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