[Qgis-developer] [gdal-dev] Fix for QGIS 2.2+ Projection issue with OSGB36 NTv2
marco.hugentobler at sourcepole.ch
Fri Mar 14 06:44:48 PDT 2014
The info for OSGB36 NTv2 is in srs.db now.
>Makes me think - could QGIS ship with the freely available gsb grids,
in an optional package (say qgis-datum-grids)? It would be rather
convenient, especially as QGIS now >supports them (but does not ship
with any grids yet, unless mistaken).
I'm receiving frequent suggestions of bundling .gsb files with QGIS. The
problems I see with this are:
- It adds the extra MB for QGIS too.
- They come with various licences.
- .gsb files are usefull for all tools working with proj. So a logical
choice would be to have an optional package for proj4.
On 13.03.2014 18:20, Etienne Tourigny wrote:
> On Thu, Mar 13, 2014 at 4:27 AM, Marco Hugentobler
> <marco.hugentobler at sourcepole.ch
> <mailto:marco.hugentobler at sourcepole.ch>> wrote:
> I'm adding the entries for OSGB36 NTv2 to srs.db.
> For the .gsb file, you could probably contact the proj4 project if
> they want it to distribute it togethere with the library (if the
> license allows that).
> I guess that's unlikely they would add it to the binary packages, as
> it would add a few MB to the base install. But they might add it to
> proj-datumgrid-1.5.zip (which contains many free datum files), as the
> licence for the grid is BSD.
> Makes me think - could QGIS ship with the freely available gsb grids,
> in an optional package (say qgis-datum-grids)? It would be rather
> convenient, especially as QGIS now supports them (but does not ship
> with any grids yet, unless mistaken).
> On 11.03.2014 18:23, Etienne Tourigny wrote:
>> You email should be sent to the qgis-developer list (this is the
>> gdal-dev list), which I am forwarding this to.
>> On Tue, Mar 11, 2014 at 7:44 AM, Nicholas Duggan
>> <dragons8mycat at live.co.uk <mailto:dragons8mycat at live.co.uk>> wrote:
>> Hi all,
>> I'm trying to get my fix for the OSGB36 to WGS84 using
>> Ordnance Surveys OSTN02 (NTv2) transformation into the QGIS
>> master. Nathan Woodrow recommended I bring it up with you
>> guys who might be able to implement it.
>> Essentially I've updated the QGIS srs.db and put the
>> OSTN02_NTv2.gsb in the Share/Proj folder, full description
>> and files are here:
>> Is this something which can be implemented by yourselves or
>> can you point me in the right direction for getting it put in
>> the master/future releases?
>> Nick D (@dragons8mycat)
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org <mailto:gdal-dev at lists.osgeo.org>
>> Qgis-developer mailing list
>> Qgis-developer at lists.osgeo.org <mailto:Qgis-developer at lists.osgeo.org>
> Dr. Marco Hugentobler
> Sourcepole - Linux & Open Source Solutions
> Weberstrasse 5, CH-8004 Zürich, Switzerland
> marco.hugentobler at sourcepole.ch <mailto:marco.hugentobler at sourcepole.ch> http://www.sourcepole.ch
> Technical Advisor QGIS Project Steering Committee
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org <mailto:Qgis-developer at lists.osgeo.org>
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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