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.
<!DOCTYPE html>
<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@1.6.0/dist/leaflet.css"
integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.6.0/dist/leaflet.js"
integrity="sha512-gZwIG9x3wUXg2hdXF6+rVkLF/0Vi9U8D2Ntg4Ga5I5BZpVkVxlJWbSQtXPSiUTtC0TjtGOmxa1AJPuV0CPthew=="
crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@2.4.1/dist/esri-leaflet.js"
integrity="sha512-xY2smLIHKirD03vHKDJ2u4pqeHA7OQZZ27EjtqmuhDguxiUvdsOuXMwkg16PQrm9cgTmXtoxA6kwr8KBy3cdcw=="
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>