turf polygon-to-line module

Usage no npm install needed!

<script type="module">
  import turfPolygonToLine from 'https://cdn.skypack.dev/@turf/polygon-to-line';




Converts a Polygon to (Multi)LineString or MultiPolygon to a FeatureCollection of (Multi)LineString.


  • poly Feature<(Polygon | MultiPolygon)> Feature to convert
  • options Object Optional parameters (optional, default {})
    • options.properties Object translates GeoJSON properties to Feature (optional, default {})


var poly = turf.polygon([[[125, -30], [145, -30], [145, -20], [125, -20], [125, -30]]]);

var line = turf.polygonToLine(poly);

var addToMap = [line];

Returns (FeatureCollection | Feature<(LineString | MultiLinestring)>) converted (Multi)Polygon to (Multi)LineString

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 module individually:

$ npm install @turf/polygon-to-line

Or install the Turf module that includes it as a function:

$ npm install @turf/turf