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<p>Hello Roland,</p>
<p>thanks for reply!</p>
<p>We are using vertical datums transformation in QField, here
Transformation in X, Y and Z from GNNS into our MGI with gridshift
is working correkt!<br>
</p>
<pre class="moz-signature" cols="72">Herzliche Grüße
Hartl Consulting e. U.
DI Peter Hartl MAS(GIS)
Gröben 11
A-6134 Vomp
Tel.: +43 660 17 42 228
<a class="moz-txt-link-abbreviated" href="mailto:office@hartl-consulting.at">office@hartl-consulting.at</a>
<a class="moz-txt-link-abbreviated" href="http://www.hartl-consulting.at">www.hartl-consulting.at</a></pre>
<div class="moz-cite-prefix">Am 07.02.2025 um 13:42 schrieb Roland
Spielhofer:<br>
</div>
<blockquote type="cite"
cite="mid:trinity-5516f12b-b464-4c04-b87e-9aaa23f4786b-1738932165352@trinity-msg-rest-gmx-gmx-live-5779db864f-8bvpc">
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<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><br>
Hi Peter,<br>
<br>
</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;">regarding
your last point - are you aware of</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><a
href="https://www.bev.gv.at/Services/Produkte/Grundlagenvermessung/Hoehen-Grid.html"
target="_blank" rel="noopener noreferrer"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.bev.gv.at/Services/Produkte/Grundlagenvermessung/Hoehen-Grid.html</a></div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"> </div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;">In
recent versions QGIS has learned about vertical datums - I use
Höhen-Grid in our own processing workflow (not QGIS-related) for
transformation from ellipsoidal height to Höhe über Adria, but I
think it could work in QGIS as well.</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"> </div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;">Grüße
nach Tirol,</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;">Roland</div>
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style="margin: 10px 5px 5px 10px; padding: 10px 0px 10px 10px; border-left: 2px solid rgb(195, 217, 229);">
<div style="margin: 0px 0px 10px;">
<div><strong>Gesendet: </strong>Freitag, 7. Februar 2025 um
07:11</div>
<div><strong>Von: </strong>"Peter Hartl via QGIS-User"
<a class="moz-txt-link-rfc2396E" href="mailto:qgis-user@lists.osgeo.org"><qgis-user@lists.osgeo.org></a></div>
<div><strong>An: </strong><a class="moz-txt-link-abbreviated" href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a></div>
<div><strong>Betreff: </strong>[Qgis-user] QGIS GNSS NMEA
Transformation Problem WGS84 to MGI Austria</div>
</div>
<p>Hello QGIS Users,</p>
<p>good morning from Winterwonderland Tirol in Austria!</p>
<p><span style="color: #008000;">GNSS NMEA interpreted as WGS84
in QGIS can do transformation with gridshift from ETRS89 to
MGI, that is alredy working very good.</span></p>
<p><span style="color: #008000;"><span
style="font-family: 'Courier New';">+proj=pipeline +step
+inv +proj=tmerc +lat_0=0 +lon_0=10.3333333333333 +k=1
+x_0=0 +y_0=-5000000 +ellps=bessel +step +proj=hgridshift
+grids=at_bev_AT_GIS_GRID_2021_09_28.tif +step +proj=utm
+zone=32 +ellps=GRS80</span></span></p>
<p><span style="color: #ff0000;">GNSS NMEA data interpreted as
WGS84, viewing on map is ok, but saving data in MGI (example
31254), default position_vector Transformation makes 30 cm
gap (parameters are ok, this was before gridshift exists)!</span></p>
<p><span style="color: #ff0000;"><span
style="font-family: 'Courier New';">+proj=pipeline +step
+inv +proj=cart +ellps=WGS84 +step +proj=push +v_3 +step
+proj=cart +ellps=WGS84 +step +inv +proj=helmert
+x=577.326 +y=90.129 +z=463.919 +rx=5.137 +ry=1.474
+rz=5.297 +s=2.4232 +convention=position_vector +step +inv
+proj=cart +ellps=bessel +step +proj=pop +v_3 +step
+proj=tmerc +lat_0=0 +lon_0=10.3333333333333 +k=1 +x_0=0
+y_0=-5000000 +ellps=bessel</span></span></p>
<p><strong>How can I make gridshift from WGS84 to MGI like
ETRS89 to MGI?</strong></p>
<p><strong>Does somebody know, is verticalshift working in QGIS
(similar to gridshift in X, Y)?</strong></p>
<pre class="moz-signature">Herzliche Grüße
Hartl Consulting e. U.
DI Peter Hartl MAS(GIS)
Gröben 11
A-6134 Vomp
Tel.: +43 660 17 42 228
<a class="moz-txt-link-abbreviated moz-txt-link-freetext"
href="mailto:office@hartl-consulting.at" target="_blank"
rel="noopener noreferrer" moz-do-not-send="true">office@hartl-consulting.at</a>
<a class="moz-txt-link-abbreviated"
href="http://www.hartl-consulting.at" target="_blank"
rel="noopener noreferrer" moz-do-not-send="true">www.hartl-consulting.at</a></pre>
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