2020-07-02 15:03:16 +10:00

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{
"name": "difference",
"type": "function",
"groups": ["GeometryGroup"],
"description": "Returns a geometry that represents that part of geometry_a that does not intersect with geometry_b.",
"arguments": [ {"arg":"geometry_a","description":"a geometry"},
{"arg":"geometry_b","description":"a geometry"}],
"examples": [ { "expression":"geom_to_wkt( difference( geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ), geom_from_wkt( 'LINESTRING(3 3, 4 4)' ) ) )", "returns":"LINESTRING(4 4, 5 5)"} ]
}