Cesium Globe Anchor Component

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

Hi @alessandro_michelin,

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?

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! :stuck_out_tongue_winking_eye:

Thx for your speedy response.

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.