Edit

Shared Views

side-by-side1 xyz8 maptiler24

Road

Aerial

Two maps share view properties

Two maps (one Road, one Aerial) share the same center, resolution and rotation.

main.js
import 'ol/ol.css';
import Map from 'ol/Map';
import TileLayer from 'ol/layer/Tile';
import View from 'ol/View';
import XYZ from 'ol/source/XYZ';

const key = 'Get your own API key at https://www.maptiler.com/cloud/';
const attributions =
  '<a href="https://www.maptiler.com/copyright/" target="_blank">&copy; MapTiler</a> ' +
  '<a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>';

const roadLayer = new TileLayer({
  source: new XYZ({
    attributions: attributions,
    url: 'https://api.maptiler.com/maps/streets/{z}/{x}/{y}.png?key=' + key,
    tileSize: 512,
    maxZoom: 22,
  }),
});

const aerialLayer = new TileLayer({
  source: new XYZ({
    attributions: attributions,
    url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key,
    maxZoom: 20,
  }),
});

const view = new View({
  center: [-6655.5402445057125, 6709968.258934638],
  zoom: 13,
});

const map1 = new Map({
  target: 'roadMap',
  layers: [roadLayer],
  view: view,
});

const map2 = new Map({
  target: 'aerialMap',
  layers: [aerialLayer],
  view: view,
});
index.html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Shared Views</title>
    <!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
    <script src="https://unpkg.com/elm-pep"></script>
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL,TextDecoder,Number.isInteger"></script>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
      @media (min-width: 800px) {
        .wrapper {
          display: flex;
        }
        .half {
          padding: 0 10px;
          width: 50%;
          float: left;
        }
      }
    </style>
  </head>
  <body>
    <div class="wrapper">
      <div class="half">
        <h4>Road</h4>
        <div id="roadMap" class="map"></div>
      </div>
      <div class="half">
        <h4>Aerial</h4>
        <div id="aerialMap" class="map"></div>
      </div>
    </div>
    <script src="main.js"></script>
  </body>
</html>
package.json
{
  "name": "side-by-side",
  "dependencies": {
    "ol": "6.6.1"
  },
  "devDependencies": {
    "parcel": "^2.0.0-beta.1"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --public-url . index.html"
  }
}