QGIS/resources/function_help/json/line_interpolate_point_by_m

{
  "name": "line_interpolate_point_by_m",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns the point interpolated by a matching M value along a linestring geometry.",
  "arguments": [{
    "arg": "geometry",
    "description": "a linestring geometry"
  }, {
    "arg": "m",
    "description": "an M value"
  }, {
    "arg": "use_3d_distance",
    "optional": true,
    "default": "false",
    "description": "controls whether 2D or 3D distances between vertices should be used during interpolation (this option is only considered for lines with z values)"
  }],
  "examples": [{
    "expression": "geom_to_wkt(line_interpolate_point_by_m(geom_from_wkt('LineStringM(0 0 0, 10 10 10)'), m:=5))",
    "returns": "'Point (5 5)'"
  }],
  "tags": ["distance", "interpolated", "linestring", "point", "specified", "along"]
}