2020-07-31 03:07:46 +10:00

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{
"name": "is_closed",
"type": "function",
"groups": ["GeometryGroup"],
"description": "Returns true if a line string is closed (start and end points are coincident), or false if a line string is not closed. If the geometry is not a line string then the result will be NULL.",
"arguments": [ {"arg":"geometry","description":"a line string geometry"}],
"examples": [ { "expression":"is_closed(geom_from_wkt('LINESTRING(0 0, 1 1, 2 2)'))", "returns":"false"},
{ "expression":"is_closed(geom_from_wkt('LINESTRING(0 0, 1 1, 2 2, 0 0)'))", "returns":"true"}]
}