Thanks, answers below Von meinem iPhone gesendet
> Am 08.02.2025 um 19:35 schrieb Greg Troxel via QGIS-User > <qgis-user@lists.osgeo.org>: > > Peter Hartl via QGIS-User <qgis-user@lists.osgeo.org> writes: > >> QGIS interprets NMEA data as WGS84 geographic data which is correct! > > No, it is not correct. It is only correct it the receiver is operating > in WGS84. That is true *only* for non-differential solutions. That > means not with SBAS, not with RTK. > > And, it's also not correct because WGS84 is an ensemble. I use EMLID Receivers with RTK, in their Software EMLID Flow and QField it Works perfekt > >> I could not find to say to QGIS that it should use ETRS89 datum! > > I think that's a missing feature. The feature is missing in QField too: > > https://github.com/opengisch/QField/issues/2855 > > > There's another problem, which is that proj, when asked to transform > from WGS84 to NAD83(2011) 2010.0, uses a null transform. That > technically makes sense because WGS84(TRANSIT) is roughly equal to > NAD83(1986). But it doesn't actually make sense. > >> We are using *QField*, here Transformation in X, Y from GNNS into our >> MGI with gridshift is working correkt (Vertical girdshift works too >> very goo in cm accuracy)! > > But what is the actual datum your NMEA is in? What kind of GNSS are you > using? > I use EMLID Receivers with RTK, in their Software EMLID Flow and QField it Works perfekt! Will Check next week which Datum is used in Receivers! >> The *same QGIS projekt behind with QGIS* shows data in map correct >> (set to 25832) but in saving to 31254 it gets shift, without >> possibiltity for changing that for me. >> >> For me it looks like a issue in QGIS! > > Maybe but you have not answered my questions about what is really going > on, and you may be operating in a mode where multiple bugs sometimes > cancel and sometimes do not. I use QField, is perfekt no need for QGIS with GNSS. Just wanted to know why nearly same Software behaves different with same Input data! Until now I found no Solution in QGIS (I Like it)! Greeting Peter > _______________________________________________ > QGIS-User mailing list > QGIS-User@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ QGIS-User mailing list QGIS-User@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
