{
  "name": "simplify",
  "type": "function",
  "description":"Simplifies a geometry by removing nodes using a distance based threshold (ie, the Douglas Peucker algorithm). The algorithm preserves large deviations in geometries and reduces the number of vertices in nearly straight segments.",
  "arguments": [ {"arg":"geometry","description":"a geometry"},
                 {"arg":"tolerance","description":"maximum deviation from straight segments for points to be removed"} ],
  "examples": [ { "expression":"geom_to_wkt(simplify(geometry:=geom_from_wkt('LineString(0 0, 5 0.1, 10 0)'),tolerance:=5))", "returns":"'LineString(0 0, 10 0)'"}]
}