QGIS/resources/function_help/json/distance_to_vertex

{
  "name": "distance_to_vertex",
  "type": "function",
  "description": "Returns the distance along the geometry to a specified vertex.",
  "arguments": [ {"arg":"geometry","description":"a linestring geometry"},
                 {"arg":"vertex","description":"vertex index, starting from 0; if the value is negative, the selected vertex index will be its total count minus the absolute value"}],
  "examples": [ { "expression":"distance_to_vertex(geometry:=geom_from_wkt('LineString(0 0, 10 0, 10 10)'),vertex:=1)", "returns":"10.0"}]
}
[FEATURE] New expression functions for angle/distance interpolation angle_at_vertex: returns average (bisector) angle to a geometry at a specified vertex index distance_to_vertex: returns distance along geometry to a specified vertex index line_interpolate_angle: calculates the angle parallel to a geometry at the specified distance along the geometry Sponsored by Andreas Neumann 2016-08-25 18:36:28 +10:00			`{`
			`"name": "distance_to_vertex",`
			`"type": "function",`
			`"description": "Returns the distance along the geometry to a specified vertex.",`
			`"arguments": [ {"arg":"geometry","description":"a linestring geometry"},`
[expression] Negative index support to point_n(), angle_at_vertex(), distance_to_vertex() functions 2019-03-12 16:24:04 +07:00			`{"arg":"vertex","description":"vertex index, starting from 0; if the value is negative, the selected vertex index will be its total count minus the absolute value"}],`
[FEATURE] New expression functions for angle/distance interpolation angle_at_vertex: returns average (bisector) angle to a geometry at a specified vertex index distance_to_vertex: returns distance along geometry to a specified vertex index line_interpolate_angle: calculates the angle parallel to a geometry at the specified distance along the geometry Sponsored by Andreas Neumann 2016-08-25 18:36:28 +10:00			`"examples": [ { "expression":"distance_to_vertex(geometry:=geom_from_wkt('LineString(0 0, 10 0, 10 10)'),vertex:=1)", "returns":"10.0"}]`
			`}`