Esri Leaflet

Styling heatmaps

Custom styling of heatmap gradients with the L.heat options. More information about Feature Layers can be found in the L.esri.FeatureLayer documentation.

<html>
<head>
  <meta charset="utf-8" />
  <title>Styling heatmaps</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@1.5.1/dist/leaflet.css"
  integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
  crossorigin=""/>
  <script src="https://unpkg.com/leaflet@1.5.1/dist/leaflet.js"
  integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og=="
  crossorigin=""></script>


  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@2.3.0/dist/esri-leaflet.js"
  integrity="sha512-1tScwpjXwwnm6tTva0l0/ZgM3rYNbdyMj5q6RSQMbNX6EUMhYDE3pMRGZaT41zHEvLoWEK7qFEJmZDOoDMU7/Q=="
  crossorigin=""></script>


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

<!-- Include Leaflet.heat from CDN -->
<script src="https://unpkg.com/leaflet.heat@0.2.0/dist/leaflet-heat.js"></script>

<!-- Load Heatmap Feature Layer from CDN -->
<script src="https://unpkg.com/esri-leaflet-heatmap@2.0.0"></script>

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

<script>
  var map = L.map('map').setView([41.759, -88.157], 12);

  L.esri.basemapLayer('Gray').addTo(map);

  // new constructor syntax at 2.0.0
  L.esri.Heat.featureLayer({
    url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/CommunityAddressing/MapServer/0',
    radius: 10,
    gradient: {
      0.2: '#ffffb2',
      0.4: '#fd8d3c',
      0.6: '#fd8d3c',
      0.8: '#f03b20',
      1: '#bd0026'
    }
  }).addTo(map);
</script>

</body>
</html>