[PROJ] Announcing PROJ 6.0.0

[Jeff McKenna]

Hi Kristian,

Just an update that I've brought this release to Sandro's attention on 
the spatialite-users list 
(https://groups.google.com/forum/#!topic/spatialite-users/eNkl3Ec8kfQ).

Thanks again for your hard work,

-jeff



On 2019-03-01 2:19 PM, Kristian Evers wrote:
> PROJ 6 has undergone extensive changes to increase its functional scope from a
> cartographic projection engine with so-called "early-binding" geodetic datum
> transformation capabilities to a more complete library supporting coordinate
> transformations and coordinate reference systems.
> 
> As a foundation for other enhancements, PROJ now includes a C++ implementation
> of the modelisation propopsed by the ISO-19111:2019 standard / OGC Abstract
> Specification Topic 2: "Referencing By Coordinates", for geodetic reference
> frames (datums), coordinate reference systems and coordinate operations.
> Construction and query of those geodetic objects is available through a new C++
> API, and also accessible for the most part from bindings in the C API.
> 
> Those geodetic objects can be imported and exported from and into the OGC
> Well-Known Text format (WKT) in its different variants: ESRI WKT, GDAL WKT 1,
> WKT2:2015 (ISO 19162:2015) and WKT2:2018 (ISO 19162:2018). Import and export of
> CRS objects from and into PROJ strings is also supported. This functionality
> was previously available in the GDAL software library (except WKT2 support
> which is a new feature), and is now an integral part of PROJ.
> 
> A unified database of geodetic objects, coordinate reference systems and their
> metadata, and coordinate operations between those CRS is now available in a
> SQLite3 database file, proj.db. This includes definitions imported from the
> IOGP EPSG dataset (v9.6.0 release), the IGNF (French national mapping agency)
> geodetic registry and the ESRI projection engine database. PROJ is now the
> reference software in the "OSGeo C stack" for this CRS and coordinate operation
> database, whereas previously this functionality was spread over PROJ, GDAL and
> libgeotiff, and used CSV or other adhoc text-based formats.
> 
> Late-binding coordinate operation capabilities, that takes  metadata such as
> area of use and accuracy into account, has been added. This can avoid in a
> number of situations the past requirement of using WGS84 as a pivot system,
> which could cause unneeded accuracy loss, or was not doable at all sometimes
> when transformation to WGS84 was not available. Those late-binding capabilities
> are now used by the proj_create_crs_to_crs() function and the cs2cs utility.
> 
> A new command line utility, projinfo, has been added to query information about
> a geodetic object of the database, import and export geodetic objects from/into
> WKT and PROJ strings, and display coordinate operations available between two
> CRSs.
> 
> Download the source distribution here:
> 
>    https://download.osgeo.org/proj/proj-6.0.0.tar.gz
>    https://download.osgeo.org/proj/proj-6.0.0.zip
> 
> 
> In addition to the new version of PROJ we are also releasing new datum grid
> packages:
> 
> proj-datumgrid-europe 1.2:
> 
>    https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.tar.gz
>    https://download.osgeo.org/proj/proj-datumgrid-europe-1.2.zip
> 
>    Changes include: Grids covering the UK, France and Sweden.
> 
> proj-datumgrid-north-america 1.2:
> 
>    https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.tar.gz
>    https://download.osgeo.org/proj/proj-datumgrid-north-america-1.2.zip
> 
>    Changes include: NAD83 -> NAD83(HPGN) grids, GEOIDB12 grids and the
>    Canadian ntv2_0.gsb grid
> 
> proj-datumgrid-world 1.0
> 
>    https://download.osgeo.org/proj/proj-datumgrid-world-1.0.tar.gz
>    https://download.osgeo.org/proj/proj-datumgrid-world-1.0.zip
> 
>    This is the first version of the world wide package. Currently it only holds
>    the EGM2008 geoid grid.
> 
> 
-- 
Jeff McKenna
MapServer Consulting and Training Services
https://gatewaygeomatics.com/