Project Z-Coordinates

Question

Hi,

if I want to project a point from one SpatialReference to another SpatialReference with a different datum (using GeoTransforamtion), the Z-Coordinate should be changed.
At IGeometry.Project(...) it is mentioned that "The Z and measure values are not changed by the Project method."
But the IGeometry2.ProjectEx(...) doesn't work either. Is there any way other to project Geometries that I'm not aware of?

Thanks

ThomasGocke · Answer

Ok, thank you Melita

MelitaKennedy · Answer

Hi,

if I want to project a point from one SpatialReference to another SpatialReference with a different datum (using GeoTransforamtion), the Z-Coordinate should be changed.
At IGeometry.Project(...) it is mentioned that "The Z and measure values are not changed by the Project method."
But the IGeometry2.ProjectEx(...) doesn't work either. Is there any way other to project Geometries that I'm not aware of?

Thanks

Hello Thomas,

We aren't yet doing any vertical (z) transformations, even when the input/output z values represent ellipsoid-based heights. We do plan to add this functionality, but it will be in a future release.

Melita