Replace overlapping points with a single point to represent a cluster using the L.markercluster plugin. To learn more, visit L.esri.Cluster.Feature in the API reference.
<html>
<head>
<meta charset="utf-8" />
<title>Cluster points</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@3.0.10/dist/esri-leaflet.js"></script>
<!-- Load Esri Leaflet Vector from CDN -->
<script src="https://unpkg.com/esri-leaflet-vector@4.2.3/dist/esri-leaflet-vector.js" crossorigin=""></script>
<!-- Load Leaflet MarkerCluster and Esri Leaflet Cluster from CDN -->
<link rel="stylesheet" type="text/css"
href="https://unpkg.com/leaflet.markercluster@1.5.0/dist/MarkerCluster.Default.css"
integrity="sha512-6ZCLMiYwTeli2rVh3XAPxy3YoR5fVxGdH/pz+KMCzRY2M65Emgkw00Yqmhh8qLGeYQ3LbVZGdmOX9KUjSKr0TA=="
crossorigin="">
<link rel="stylesheet" type="text/css" href="https://unpkg.com/leaflet.markercluster@1.5.0/dist/MarkerCluster.css"
integrity="sha512-mQ77VzAakzdpWdgfL/lM1ksNy89uFgibRQANsNneSTMD/bj0Y/8+94XMwYhnbzx8eki2hrbPpDm0vD0CiT2lcg=="
crossorigin="">
<script src="https://unpkg.com/leaflet.markercluster@1.5.0/dist/leaflet.markercluster.js"
integrity="sha512-pWPELjRaw2ZdoT0PDi7iRpRlk1XX3rtnfejJ/HwskyojpHei+9hKpwdphC4yssNt4FM0TjMQOmMrk6ZYSn274w=="
crossorigin=""></script>
<script src="https://unpkg.com/esri-leaflet-cluster@3.0.1/dist/esri-leaflet-cluster.js"></script>
<style>
html,
body,
#map {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #323232;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
const apiKey = "YOUR_API_KEY";
const map = L.map("map", {
maxZoom: 18 //The clustering plugin needs to understand the map's maxZoom
}).setView([0, 0], 2);
L.esri.Vector.vectorBasemapLayer("arcgis/community", {
apikey: apiKey
}).addTo(map);
// (new constructor syntax at 2.0.0)
L.esri.Cluster.featureLayer({
url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Earthquakes_Since1970/MapServer/0"
}).addTo(map);
</script>
</body>
</html>