Esri Leaflet

Ordering Feature Layers

Controlling the order of feature layers allows greater cartographic control over the rendering of layers beyond the normal tile / polygon / point ordering.

<html>
<head>
  <meta charset=utf-8 />
  <title>Ordering Feature Layers</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@1.1.0/dist/leaflet.css"
    integrity="sha512-wcw6ts8Anuw10Mzh9Ytw4pylW8+NAD4ch3lqm9lzAsTxg0GFeJgoAtxuCLREZSC5lUXdVyo/7yfsqFjQ4S+aKw=="
    crossorigin=""/>
  <script src="https://unpkg.com/leaflet@1.1.0/dist/leaflet-src.js"
    integrity="sha384-TWB9xRHTlLQmqAngHwD7usGcf4akGf0JP6aHwlgilpmOu2UuBq5aWLsDAh39iSn1"
    crossorigin=""></script>


  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@2.0.8"
    integrity="sha384-ze7rgny7/YGFxBlVgTBdOABNWe5V9BYjju/qwqJhCU8XJHtuEnRlbUpN5lXyY706"
    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").setView([45.5384, -122.6695], 16);

  L.esri.basemapLayer("Topographic").addTo(map);

  var neighborhoodsUrl = "https://services.arcgis.com/rOo16HdIMeOBI4Mb/arcgis/rest/services/Neighborhoods_pdx/FeatureServer/0";
  var eliotFootprintsUrl = "https://services.arcgis.com/rOo16HdIMeOBI4Mb/arcgis/rest/services/Eliot%20Building%20Footprints/FeatureServer/0";
  var blockPointsUrl = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/0";

  // create a map pane for neighborhoods
  map.createPane('neighborhoods');

  // Define the created pane when creating the feature layer
  L.esri.featureLayer({
    url: neighborhoodsUrl,
    pane: 'neighborhoods',
  }).addTo(map);

  // Panes are added to the map in order - this pane will be sit on top of 'neighborhoods'
  map.createPane('footprints');

  L.esri.featureLayer({
    url: eliotFootprintsUrl,
    pane: 'footprints',
    style: function (feature) {
      return {  color: 'white', weight: 0, fillOpacity: 1  };
    }
  }).addTo(map);

  map.createPane('blockpoints');

  // for point GeoJSON, Leafet expects custom panes to be returned in pointToLayer()
  L.esri.featureLayer({
    url: blockPointsUrl,
    pointToLayer: function (geojson, latlng) {
      return L.circleMarker(latlng, {
        pane: 'blockpoints',
        color: 'green'
      });
    }
  }).addTo(map);

</script>

</body>
</html>