QGIS/resources/function_help/json/nodes_to_points

{
  "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))'"}
  ]
}