Re: [QGIS-Developer] BWTA2017 grid support in QGIS >= 3.10

2019-12-03 Thread Thomas Baumann
@Even Rounault: thanks for this info. Then I guess we'll see the BWTA2017
support in 3.10.3 in the mid of january... keeping fingers crossed :-)

Am Di., 3. Dez. 2019 um 15:06 Uhr schrieb Even Rouault <
even.roua...@spatialys.com>:

> > @Jürgen Fischer: is there a change that you could "cherry-pick" the
> > corresponding pull requests and patch them into the existing PROJ release
> > used by osgeo4w for the upcoming pointrelease?
>
> Just wants to note that a PROJ 6.3.0 release, with the
> accompanying proj-datumgrid- backages, is scheduled for the beginning
> of
> January.
>
> Even
>
>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
>
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Re: [QGIS-Developer] BWTA2017 grid support in QGIS >= 3.10

2019-12-03 Thread Even Rouault
> @Jürgen Fischer: is there a change that you could "cherry-pick" the
> corresponding pull requests and patch them into the existing PROJ release
> used by osgeo4w for the upcoming pointrelease?

Just wants to note that a PROJ 6.3.0 release, with the
accompanying proj-datumgrid- backages, is scheduled for the beginning of 
January.

Even


-- 
Spatialys - Geospatial professional services
http://www.spatialys.com
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[QGIS-Developer] BWTA2017 grid support in QGIS >= 3.10

2019-12-03 Thread Thomas Baumann
Hello QGIS-devs,

in QGIS2 and QGIS-3 versions with proj<6 there was a support for the
BWTA2017.gsb-gridfile which is needed in the state Baden-Württemberg (
https://en.wikipedia.org/wiki/Baden-W%C3%BCrttemberg ) in southwest germany
to transform between the former official crs EPSG31467 and the new one
EPSG25832:

https://github.com/qgis/QGIS/pull/6980


For some time there was an issue about including the BWTA in the
proj-datumgrid.

https://github.com/OSGeo/proj-datumgrid/issues/22

The main reason why QGIS 3.10/proj6 cannot use the BWTA2017.gsb is that it
is not referenced in the EPSG registry so far but I will get in contact
with the LGL (www.lgl-bw.de) to ask them if they can make a changerequest
on http://www.epsg.org/EPSGDataset/Makechangerequest.aspx

For the meantime there are two pull requests which have been merged today:

https://github.com/OSGeo/proj-datumgrid/pull/65
and
https://github.com/OSGeo/PROJ/pull/1759 ( Even Rouault:"...As EPSG has no
entry for it, we create a grid_transformation, as well as a dedicated area
of use based on the extent of the grid, under the PROJ authority. With the
hope to be able to remove it once EPSG has an entry...")

@Jürgen Fischer: is there a change that you could "cherry-pick" the
corresponding pull requests and patch them into the existing PROJ release
used by osgeo4w for the upcoming pointrelease?

regards,
Thomas
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