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Polygon Properties

Polygon properties

Title Description
AREA Synonym for ST_AREA.
CENTROID Synonym for ST_CENTROID.
ExteriorRing Synonym for ST_ExteriorRing.
InteriorRingN Synonym for ST_InteriorRingN.
NumInteriorRings Synonym for NumInteriorRings.
ST_AREA Area of a Polygon.
ST_CENTROID The mathematical centroid (geometric center) for a MultiPolygon.
ST_ExteriorRing Returns the exterior ring of a Polygon as a LineString.
ST_InteriorRingN Returns the N-th interior ring for a Polygon.
ST_NumInteriorRings Number of interior rings in a Polygon.
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https://mariadb.com/kb/en/polygon-properties/