Thank you Greg. EPSG 32632
attached data to this email, Manolo On Wed, Jun 28, 2023 at 11:48 PM Greg Troxel <[email protected]> wrote: > Sebastian Gutwein via QGIS-User <[email protected]> writes: > > > Manolo, > > You may already know this and be asking a deeper question that I am not > > understanding but in case you are not: > > The Z is the value derived from the geometry itself that QGIS uses to > draw > > the location of the point. > > The Elevation is an attribute associated with the point (a field in the > > attribute table). > > There are many reasons that these might not be the same. > > It could be that they were derived from two different sources or there > was > > a transformation that occurred that changed the Z value. > > Hope this helps. > > -Bas > > I am a beginner with dealing with height/elevation in qgis, but it seems > obvious :-) that the Z value is interpreted with respect to the CRS, > which must necessarily be a lat/lon/vertical. Some 3D CRSes have > vertical components that are HAE e.g. EPSG:7912, ITRF2014 lat/lon/hae, > and some will have vertical components that are some kind of orthometric > height, e.g. EPSG:5498, NAD83 lat/lon and NAVD88 height. > > So "Z should be ellipsoidal" is not in general true. > > (Plus, Sebastian's comments sound very useful, and you (Manolo) did not > post your CRS and data schema.) > > Greg >
<<attachment: Dataset_Manolo.zip>>
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