{
  "name": "nodes_to_points",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns a multipoint geometry consisting of every node in the input geometry.",
  "arguments": [{
    "arg": "geometry",
    "description": "geometry object"
  }, {
    "arg": "ignore_closing_nodes",
    "optional": true,
    "default": "false",
    "description": "optional argument specifying whether to include duplicate nodes which close lines or polygons rings. Defaults to false, set to true to avoid including these duplicate nodes in the output collection."
  }],
  "examples": [{
    "expression": "geom_to_wkt(nodes_to_points(geom_from_wkt('LINESTRING(0 0, 1 1, 2 2)')))",
    "returns": "'MultiPoint ((0 0),(1 1),(2 2))'"
  }, {
    "expression": "geom_to_wkt(nodes_to_points(geom_from_wkt('POLYGON((-1 -1, 4 0, 4 2, 0 2, -1 -1))'),true))",
    "returns": "'MultiPoint ((-1 -1),(4 0),(4 2),(0 2))'"
  }],
  "tags": ["vertex", "multipoint", "node", "input"]
}