First example of ESRI leafet: loading ArcGIS base map

Posted by neuroxik on Fri, 31 Jan 2020 18:40:47 +0100

Leaflet It is an open-source JavaScript map library, which is a relatively mainstream Map Library in WebGIS. It is lightweight, rich in plug-ins, highly active in the community, and relatively mature. Not long ago, a new version 1.3.3 was released.

Next, we will show how to display ArcGIS foundation base map.

First, load the code and style of Leaflet, Leaflet.js, leaflet.css; load the Esri Leaflet Library: esri-leflet.js.

  <!-- lets load Leaflet's .js and .css from CDN-->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.1/dist/leaflet.css" />
  <script src="https://unpkg.com/leaflet@1.0.1/dist/leaflet.js"></script>

  <!-- Load Esri Leaflet from CDN.  it has no .css stylesheet of its own, only .js -->
  <script src="https://unpkg.com/esri-leaflet@2.0.4/dist/esri-leaflet.js"></script>

Base map supported
Basic base maps supporting ArcGIS Online: such as Streets, topographical, Gray and dark Gray maps. These types of base maps can be accessed only by specifying their names when defining the base map layer.

var map = L.map('map', {
      center: [28.2, 113.03],
      zoom: 8
    });

var layer = L.esri.basemapLayer(Streets).addTo(map);

The complete code is as follows:

<html>
<head>
  <meta charset=utf-8 />
  <title>Showing an ArcGIS basemap</title>
  <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />

    <!-- Load Leaflet from CDN -->
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.1/dist/leaflet.css"
    integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ=="
    crossorigin=""/>
    <script src="https://unpkg.com/leaflet@1.3.1/dist/leaflet.js"
    integrity="sha512-/Nsx9X4HebavoBvEBuyp3I7od5tA0UzAxs+j83KgC8PU0kgB4XiK4Lfe4y4cgBtaRJQEIFCW+oC506aPT2L1zw=="
    crossorigin=""></script>


    <!-- Load Esri Leaflet from CDN -->
    <script src="https://unpkg.com/esri-leaflet@2.2.1/dist/esri-leaflet.js"
    integrity="sha512-6BBVttv13OVrrUSoGmy9/aIVHateyIEGFaQxqnzCgXT9LNCAQ1Cxxj43R6Eq0ynydS7a7bLLfmEWwXFiO6lW2g=="
    crossorigin=""></script>


  <style>
    body { margin:0; padding:0; }
    #map { position: absolute; top:0; bottom:0; right:0; left:0; }
  </style>
</head>
<body>

<div id="map"></div>

<script>
  var map = L.map('map', {
      center: [28.2, 113.03],
      zoom: 8
    });

  var layer = L.esri.basemapLayer('Streets').addTo(map);

</script>

</body>
</html>

The final results are as follows:

Topics: Javascript

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First example of ESRI leafet: loading ArcGIS base map

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