Constrained Zoom

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Constrained Zoom

Example of a zoom constrained view.

This map has a view that is constrained between zoom levels 9 and 13. This is done using the minZoom and maxZoom view options.

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index.html<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Constrained Zoom</title>
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL"></script>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
    </style>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script src="index.js"></script>
  </body>
</html>

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index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import TileLayer from 'ol/layer/Tile';
import XYZ from 'ol/source/XYZ';


var key = 'Get your own API key at https://www.maptiler.com/cloud/';
var 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>';

var map = new Map({
  target: 'map',
  layers: [
    new TileLayer({
      source: new XYZ({
        attributions: attributions,
        url: 'https://api.maptiler.com/tiles/satellite/{z}/{x}/{y}.jpg?key=' + key
      })
    })
  ],
  view: new View({
    center: [-13553864, 5918250],
    zoom: 11,
    minZoom: 9,
    maxZoom: 13
  })
});

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package.json{
  "name": "zoom-constrained",
  "dependencies": {
    "ol": "6.3.1"
  },
  "devDependencies": {
    "parcel": "1.11.0"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"
  }
}