QGIS/resources/function_help/json/closest_point

{
  "name": "closest_point",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns the point on geometry1 that is closest to geometry2.",
  "arguments": [
    {"arg":"geometry1","description":"geometry to find closest point on"},
    {"arg":"geometry2","description":"geometry to find closest point to"}
  ],
  "examples": [
    {
      "expression":"geom_to_wkt(closest_point(geom_from_wkt('LINESTRING (20 80, 98 190, 110 180, 50 75 )'),geom_from_wkt('POINT(100 100)')))",
      "returns":"'Point(73.0769 115.384)'"
    }
  ]
}