Example on how to use turf.js with OpenLayers.

Example showing the integration of turf.js with OpenLayers. The turf.js function along is used to display a marker every 200 meters along a street.

import GeoJSON from 'ol/format/GeoJSON';
import Map from 'ol/Map';
import View from 'ol/View';
import {OSM, Vector as VectorSource} from 'ol/source';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer';
import {fromLonLat} from 'ol/proj';

const source = new VectorSource();
  .then(function (response) {
    return response.json();
  .then(function (json) {
    const format = new GeoJSON();
    const features = format.readFeatures(json);
    const street = features[0];

    // convert to a turf.js feature
    const turfLine = format.writeFeatureObject(street);

    // show a marker every 200 meters
    const distance = 0.2;

    // get the line length in kilometers
    const length = turf.lineDistance(turfLine, 'kilometers');
    for (let i = 1; i <= length / distance; i++) {
      const turfPoint = turf.along(turfLine, i * distance, 'kilometers');

      // convert the generated point to a OpenLayers feature
      const marker = format.readFeature(turfPoint);
      marker.getGeometry().transform('EPSG:4326', 'EPSG:3857');

    street.getGeometry().transform('EPSG:4326', 'EPSG:3857');
const vectorLayer = new VectorLayer({
  source: source,

const rasterLayer = new TileLayer({
  source: new OSM(),

const map = new Map({
  layers: [rasterLayer, vectorLayer],
  target: document.getElementById('map'),
  view: new View({
    center: fromLonLat([126.980366, 37.52654]),
    zoom: 15,
<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <link rel="stylesheet" href="node_modules/ol/ol.css">
      .map {
        width: 100%;
        height: 400px;
    <div id="map" class="map"></div>
    <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
    <script src="https://unpkg.com/[email protected]/dist/elm-pep.js"></script>
    <script src="https://api.tiles.mapbox.com/mapbox.js/plugins/turf/v2.0.0/turf.min.js"></script>
    <script type="module" src="main.js"></script>
  "name": "turf",
  "dependencies": {
    "ol": "7.1.0"
  "devDependencies": {
    "vite": "^3.0.3",
    "@babel/core": "latest"
  "scripts": {
    "start": "vite",
    "build": "vite build"