Esri Leaflet

Visualizing time on a feature layer

Filtering a feature layer within a certain time range. Try dates between October 2010 and August 2011. More information about Feature Layers can be found in the L.esri.FeatureLayer documentation.

<html>
<head>
  <meta charset=utf-8 />
  <title>Visualizing time on a feature layer</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@1.0.3/dist/leaflet.css" />
  <script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet-src.js"></script>

  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@2.0.7"></script>

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

<!-- Include Leaflet.heat via rawgit.com
in production you'd be better off hosting this library yourself -->
<script src="https://rawgit.com/Leaflet/Leaflet.heat/gh-pages/dist/leaflet-heat.js"></script>

<!-- Load Heatmap Feature Layer from CDN -->
<script src="https://cdn.jsdelivr.net/leaflet.esri.heatmap-feature-layer/2.0.0-beta.1/esri-leaflet-heatmap-feature-layer.js"></script>

<style>
  #time-ranges {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 1000;
    padding: 1em;
    background: white;
  }
  #time-ranges input {
    display: inline-block;
    border: 1px solid #999;
    font-size: 14px;
    border-radius: 4px;
    height: 28px;
    line-height: 28px;
  }
  #time-ranges input[type='submit'] {
    box-sizing: content-box;
    padding: 0 1em;
    text-transform: uppercase;
    color: white;
    background: #5C7DB8;
    border-color: #5C7DB8;
  }
</style>

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

<div id="time-ranges" class="leaflet-bar">
  <form action="#" id="form">
    <label for="from">
      From
      <input id='from' type="date" value='2011-01-01' name='from'>
    </label>
    <label for="to">
      To
      <input  id='to' type="date" value='2011-03-31' name='to'>
    </label>
    <input type="submit" value="Update">
  </form>
</div>

<script>
  var timeForm = document.getElementById('form');
  var startTimeInput = document.getElementById('from');
  var endTimeInput = document.getElementById('to');

  var map = L.map('map').setView([ 40.706, -73.926], 12);

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

  var reports = L.esri.Heat.heatmapFeatureLayer({
    url: 'https://services.arcgis.com/rOo16HdIMeOBI4Mb/ArcGIS/rest/services/Graffiti_Reports/FeatureServer/0',
    timeField: 'CreatedDate',
    from: new Date(startTimeInput.value),
    to: new Date(endTimeInput.value),
    radius: 12
  }).addTo(map);

  timeForm.addEventListener('submit', function updateTimeRange(e){
    reports.setTimeRange(new Date(startTimeInput.value), new Date(endTimeInput.value));
    e.preventDefault();
  });
</script>

</body>
</html>