STConvexHull (geometry)#
Returns an object representing the convex hull of a geometry instance.
Syntax#
.STConvexHull ()
Return type#
geometry
Remarks#
STConvexHull() returns the smallest convex polygon that contains the given geometry instance. Points or co-linear LineString instances will produce an instance of the same type as that of the input.
Example#
Use STConvexHull() to find the convex hull of a non-convex Polygon geometry instance.
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('POLYGON((0 0, 0 2, 1 1, 2 2, 2 0, 0 0))', 0);
SELECT @g.STConvexHull().ToString();