Hi,
I work in a UE 5.x project with the Cesium Plugin.
I noticed that if I place a shape on the sea, that is supposed to be at 0 meters more or less, the Cesium Globe Anchor returns an altitude value of 43ish. I work around Italy but I placed the georeference not too far away.
Anyone had any tip regarding this issue? What I could check?
Thanks in advance
Cheers!
The “height” value in the Longitude / Latitude / Height system does not refer to height above sea level. It refers to the height above the WGS84 Ellipsoid, which is the model used by Cesium Native to do globe-position computations.
Do you need to compute the height above sea level for your application?
Hi,
Yes, I had to process external data and georeferencing it on the globe.
The altitude is intended AMSL.
Looking around maybe I found a similar topic “The height of the sea is not 0 - #6 by agallegos”
Anyways any suggestion regarding this conversion would be appreciated! 
Thx for your speedy response.
Cheers.
We don’t currently have anything built-in to do this. I wrote an issue to add it:
In the meantime, there are online calculators that can do this for a small number of points. Or most GIS tools (GDAL, QGIS, for example) can do it in bulk.