STIsClosed (geography Data Type)

STIsClosed (geography Data Type)

Returns 1 if the start and end points of the given geography instance are the same. Returns 1 for geography collection types if each contained geography instance is closed. Returns 0 if the instance is not closed.


.STIsClosed ( )

SQL Server return type: bit

CLR return type: SqlBoolean

This method returns 0 if any figures of a geography instance are points, or if the instance is empty.

All Polygon instances are considered closed.

The following example creates a Polygon instance and uses STIsClosed() to test if the Polygon is closed.

DECLARE @g geography;
SET @g = geography::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326);
SELECT @g.STIsClosed();

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