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<!DOCTYPE html>
<html lang="en">
<title>HTML Marker layer and vector tiles - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<link rel="shortcut icon" href="/favicon.ico"/>
<meta http-equiv="x-ua-compatible" content="IE=Edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
<meta name="description" content="This sample shows how to how to use a vector tile service to render point data on the map using HTML markers." />
<meta name="keywords" content="Microsoft maps, map, gis, API, SDK, markers, pins, pushpins, symbols, layer, clustering, superclusterer, html marker layer, clustering, vector tiles, mbtiles, traffic, layer, flow, incidents" />
<meta name="author" content="Microsoft Azure Maps" />
<!-- Add references to the Azure Maps Map control JavaScript and CSS files. -->
<link rel="stylesheet" href="" type="text/css" />
<script src=""></script>
<!-- Add a reference to the HTML Marker layer module. -->
<script src="../Common/scripts/azure-maps-html-marker-layer.min.js"></script>
<script type='text/javascript'>
var map, datasource, markerLayer, popup;
function GetMap() {
//Point the Azure Maps domain to the US Azure Gov Cloud domain.
//Initialize a map instance.
map = new atlas.Map('myMap', {
center: [-74, 40.723],
style: 'grayscale_dark',
zoom: 12,
view: 'Auto',
//Add authentication details for connecting to Azure Maps.
authOptions: {
//Use Azure Active Directory authentication.
authType: 'anonymous',
clientId: 'c9f2f391-13f1-407b-a4a5-f0a241bacfbf', //Your Azure Active Directory client id for accessing your Azure Maps account.
getToken: function (resolve, reject, map) {
//URL to your authentication service that retrieves an Azure Active Directory Token.
var tokenServiceUrl = '';
fetch(tokenServiceUrl).then(r => r.text()).then(token => resolve(token));
//Alternatively, use an Azure Maps key. Get an Azure Maps key at NOTE: The primary key should be used as the key.
//authType: 'subscriptionKey',
//subscriptionKey: '<Your Azure Maps Key>'
//Wait until the map resources are ready.'ready', function () {
//Create a reusable popup.
popup = new atlas.Popup({
pixelOffset: [0, -20],
closeButton: false
//Create a vector tile source and add it to the map.
datasource = new atlas.source.VectorTileSource(null, {
tiles: ['https://{azMapsDomain}/traffic/incident/tile/pbf?api-version=1.0&zoom={z}&x={x}&y={y}'],
maxZoom: 22
//Create a HTML marker layer for rendering data points.
markerLayer = new atlas.layer.HtmlMarkerLayer(datasource, null, {
//The name of the data layer within the data source to pass into this rendering layer.
sourceLayer: 'Traffic incident POI',
markerCallback: function (id, position, properties) {
if(typeof properties.cluster_size === 'number'){
//Marker is a cluster. Note that clusters in the traffic vector tile source as formatted differently than clusters in a GeoJSON data source.
return new atlas.HtmlMarker({
position: position,
color: 'purple',
text: properties.cluster_size
} else {
//Business logic to define color of marker.
var color = 'gray'; //Unknown or undefined
switch (properties.magnitude) {
case 1: //Minor
color = '#3366CC';
case 2: //Moderate
color = '#DC3912';
case 3: //Major
color = '#FF9900';
case 4:
color = '#109618';
//Create an HtmlMarker with a random color.
return new atlas.HtmlMarker({
position: position,
color: color
//Add mouse events to the layer to show/hide a popup when hovering over a marker.'mouseover', markerLayer, markerHovered);'mouseout', markerLayer, hidePopup);
//Add marker layer to the map.
function markerHovered(e) {
var marker =;
var content;
if(typeof === 'number'){
content = `<div style="padding:10px;"">Cluster: ${}</div>`;
} else {
content = atlas.PopupTemplate.applyTemplate(;
//Update the content and position of the popup.
content: content,
position: marker.getOptions().position
//Open the popup.;
function hidePopup() {
<body onload="GetMap()">
<div id="myMap" style="position:relative;width:100%;min-width:290px;height:600px;"></div>
<fieldset style="width:calc(100% - 30px);min-width:290px;margin-top:10px;">
<legend><h1 style="font-size:16px">HTML Marker layer and vector tiles</h1></legend>
This sample shows how to how to use a vector tile service to render point data on the map using HTML markers.
This samples uses the open source <a href="" target="_blank">Azure Maps HTML Marker Layer module</a>.