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Empty geometries
A feature with a null or zero-ring geometry (e.g. GEOMETRYCOLLECTION EMPTY, or coordinates: []) produces no cells and can silently vanish from an audience or trade-area union.
Class
Case to account for
Affects
4 conversions
01
Detection
Geometry is null, coordinates array is empty, or ring count is 0.
02
Mitigation
01
Filter and log empty geometries at ingest rather than let them drop silently
02
Alert when a feature count declines after a geometry-processing step
03
Affected conversions
PolygonH3 (center-contained)
OPENPolygonH3 (fully-contained)
OPENPolygonH3 (intersects)
OPENAdmin polygonsH3 (max-overlap partition)
OPEN