[Qgis-user] Convert geocentric x, y, z to projected coordinates

[Andrea Giudiceandrea]

> Kirk Schmidt kirk at nortekresources.com
> Fri Feb 27 07:14:27 PST 2026
> Something seems wrong with your data.  The z elevation is 4736 km which 
> is a bit high for terrestrial mapping applications.

Hi Kirk,
the data is not wrong. The "Z" value doesn't represent an elevation 
above the ellipsoid / geoid.
X, Y, Z values in a geocentric CRS represent coordinates in a 3D 
Cartesian space Earth centred, so they are distances from the Earth centre.

Regards.

Andrea