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Why doesn't GeometryEngine.Union perform the union?

Question asked by Cammarere0 on Mar 29, 2017
Latest reply on Mar 29, 2017 by JNery-esristaff

I'm trying to union two valid (polygon) geometries (they both have valid extents and spatial references), but when I do the Union, I get an empty geometry with NaN extent:


Geometry aGeom = GeometryEngine.Union(aGeom1, aGeom2);


The input geometries (aGeom1, aGeom2) are rectangular polygons in the WGS84 spatial reference (WKID = 4326). I've even tried unioning one of the geometries with itself - and I still get an empty geometry. Please help!