length

Description

Takes a GeoJSON and measures its length in the specified units, (Multi)Point's distance are ignored.

Parameters

Name	Type	Description
geojson	Feature<LineString | MultiLineString>	GeoJSON to measure
options?	Object	Optional parameters (default {})
options.units?	string	can be degrees, radians, miles, or kilometers (default kilometers)

Returns

number length of GeoJSON

Examples

var line = turf.lineString([
  [115, -32],
  [131, -22],
  [143, -25],
  [150, -34],
]);
var length = turf.length(line, { units: "miles" });

Installation

$ npm install @turf/length

import { length } from "@turf/length";
const result = length(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.length(...);