Hi
Would it be possible to define a "Custom CRS" for the source CRS containing the
nadgrids-stuff for doing ntv2 transformation in QGIS 2.0.1?
Yes, it is possible to work with custom CRS (although it is not so
convenient).
Is this already in 2.1?
If yes, where could one find it?
There is a dialog showing the available datum transformations. This
dialog shows up as soon as a layer needs a datum transformation (e.g. if
on-the-fly reprojection is toggled or when doing save as'). However, the
ntv2 transformation info has to be inserted into srs.db / table
datum_transform first.
Regards,
Marco
On 05.02.2014 15:42, Robert Nuske wrote:
Hi Marco,
QGIS 2.2 will have support for NTv2 datum transformations as a core
function.
Is this already in 2.1?
If yes, where could one find it?
Would it be possible to define a "Custom CRS" for the source CRS containing the
nadgrids-stuff for doing ntv2 transformation in QGIS 2.0.1?
For example GK3:
"+proj=tmerc +lat_0=0 +lon_0=9 +k=1.000000 +x_0=3500000 +y_0=0 +ellps=bessel
+units=m +nadgrids=BETA2007.gsb +wktext"
cheers,
robert
On 05.02.2014 13:34, Burgstaller Stefan wrote:
Hi,
is it already possible to reproject shape-files using NTv2 grids? I
was looking for appropriate plugins, help documents and already
available tools but I have not found anything. Since the federal
states in Germany start to convert their geospatial data from
Gauss-Kruger to ETRS89 with NTv2 grids this topic becomes more and
more urgent.
Greetings,
Stefan Burgstaller
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--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentob...@sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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