[Proj] [gdal-dev] Coordinate system improvements - GDAL, libgeotiff, PROJ barn raising

[Even Rouault]

Hi all,

Excellent news: the last third of the funding was completed yesterday, so this project will 
come true ! Thanks to all sponsors who have contributed making this possible [1]

So what does this mean for GDAL ? Obviously all the functionality mentionned below will 
become available once implemented.

Most of the initial work will be done in PROJ first, with GDAL catching it up afterwards (or in 
an experimental branch at first to follow the "eat your own dog food" principle). I'll come 
back later with more concrete implementation plans.

I guess some disruption is to be expected temporarily as functionnality will move from GDAL 
down to PROJ. This will probably mean that PROJ master will be a required dependency for 
GDAL master (and PROJ 6.0 a minimum and compulsory requirement for GDAL 2.4)

Best regards,

Even


[1]
(Anonymous)
AppGeo
Applied Imagery
Azavea
Boundless
Carto
ESRI 
GeoCue
LizardTech
LINZ
Mapbox
Mobile Geographics
Oslandia
Safe Software
Sparkgeo
Spatial Networks
Radiant Solutions
Terranodo
The Timoney Group

> Hi,
> 
> A barn raising to improve coordinate system abilities in GDAL, libgeotiff,
> and PROJ has been publicly launched today. You can find more details about
> the proposal, its current sponsors and technical information at:
> 
> 	https://gdalbarn.com
> 
> The hightlights of the planned work are:
> 
> * migration for CSV support data to a SQLite database shared between
> projects, offering more capabilities
> 
> * WKT2 support: increased interoperability between implementations. better
> ground for definitions, especially in areas such as axis, vertical control,
> and epochs
> 
> * end of WGS84 as a compulsory datum pivot, to be replaced by "late-binding"
> transformations that PROJ.5 now allows.
> 
> We are currently at 2/3 of the final funding goal. If your software and
> projects benefit from the GDAL, libgeotiff and PROJ stack, this is your
> chance to concretely help in its future improvements.
> 
> Best regards,
> 
> Howard Butler
> Kristian Evers
> Paul Ramsey
> Even Rouault


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