Function spatialite_sys::gaiaUnaryUnion

pub unsafe extern "C" fn gaiaUnaryUnion(
    geom: gaiaGeomCollPtr
) -> gaiaGeomCollPtr

Spatial operator: Unary Union

\param geom the input Geometry object.

\return the pointer to newly created Geometry object: NULL on failure. \n this function is the same as gaiaGeometryUnion, except in that this works internally to the input Geometry itself. NULL on failure.

\sa gaiaUnaryUnion_r, gaiaFreeGeomColl, gaiaGeometryUnion, gaiaUnionCascaded

\note you are responsible to destroy (before or after) any allocated Geometry, this including any Geometry returned by gaiaUnaryUnion()\n not reentrant and thread unsafe.

\remark \b GEOS-ADVANCED support required.