@turf/length

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

• geojson Feature<(LineString | MultiLineString)> GeoJSON to measure

• options Object Optional parameters (optional, default {})

  • options.units string can be degrees, radians, miles, or kilometers (optional, default kilometers)

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

//addToMap
var addToMap = [line];
line.properties.distance = length;

Returns number length of GeoJSON

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Install this single module individually:

$ npm install @turf/length

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf