Map Clustering with GeoJSON

Sample code for Woosmap Map JavaScript API author(s): Woosmap

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Map Clustering with GeoJSON</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta charset="utf-8" />

    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <!--The div element for the map -->
    <div id="map"></div>

    <script
      src="https://sdk.woosmap.com/map/map.js?key=woos-e1e5490b-19d1-34f8-9955-fd5cfc8c880f&callback=initMap"
      defer
    ></script>
  </body>
</html>

CSS

/*
 * Always set the map height explicitly to define the size of the div element
 * that contains the map.
 */
#map {
  height: 100%;
}

/*
 * Optional: Makes the sample page fill the window.
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
}

JavaScript

import Supercluster from "supercluster";
let map;
let infoWindow;
let index;
let markers = [];
const GEOJSON_URL = "https://demo.woosmap.com/misc/data/uk-all-pubs.geojson";
const ICON_URL = "https://images.woosmap.com/dot-green.svg"; //
const SUPERCLUSTER_OPTIONS = {
  radius: 40,
  extent: 256,
  maxZoom: 14,
  minPoints: 5,
};

function initMap() {
  infoWindow = new woosmap.map.InfoWindow({});
  map = new window.woosmap.map.Map(document.getElementById("map"), {
    center: {
      lat: 55.5,
      lng: -4,
    },
    zoom: 5.7,
    styles: [
      {
        elementType: "geometry",
        stylers: [{ color: "#f6f6f6" }],
      },
      {
        elementType: "labels.icon",
        stylers: [{ visibility: "off" }],
      },
      {
        elementType: "labels.text.fill",
        stylers: [{ color: "#616161" }],
      },
      {
        elementType: "labels.text.stroke",
        stylers: [{ color: "#f5f5f5" }],
      },
      {
        featureType: "administrative.land_parcel",
        elementType: "labels.text.fill",
        stylers: [{ color: "#bdbdbd" }],
      },
      {
        featureType: "road",
        elementType: "geometry",
        stylers: [{ color: "#ffffff" }],
      },
      {
        featureType: "road.arterial",
        elementType: "labels.text.fill",
        stylers: [{ color: "#757575" }],
      },
      {
        featureType: "road.highway",
        elementType: "geometry",
        stylers: [{ color: "#dadada" }],
      },
      {
        featureType: "road.highway",
        elementType: "labels.text.fill",
        stylers: [{ color: "#616161" }],
      },
      {
        featureType: "road.local",
        elementType: "labels.text.fill",
        stylers: [{ color: "#9e9e9e" }],
      },
      {
        featureType: "transit.line",
        elementType: "geometry",
        stylers: [{ color: "#e5e5e5" }],
      },
      {
        featureType: "transit.station",
        elementType: "geometry",
        stylers: [{ color: "#eeeeee" }],
     ...