ST_GeometryN
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Returns the Nth component of a sub-object.
Syntax
meshgeom ST_NumGeometries(meshgeom geom, integer index );
meshgeom ST_NumGeometries(sfmesh sfmeshObject, integer index );Parameters
Parameter Name | Description |
geom | The meshgeom object. |
sfmeshObject | The sfmesh object. |
index | The zero-based index of the geometry component. |
Description
Returns the Nth component of a child object.
Examples
select ST_AsText(ST_GeometryN('MESHGEOM(PATCH(INDEXSURFACE(VERTEX(0 0 2,0 10 3,10 10 1,10 0 1), INDEX((0,1,2),(1,2,3)))))'::meshgeom, 0));
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MESHGEOM(PATCH(INDEXSURFACE Z (VERTEX(0 0 2,0 10 3,10 10 1,10 0 1),INDEX((0,1,2),(1,2,3))))) Is this page helpful?