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<!DOCTYPE html>
<title>User Location Accuracy Circle - Azure Maps Web SDK Samples</title>
<meta charset="utf-8" />
<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 display the users position on the map with an accuracy circle." />
<meta name="keywords" content="map, gis, API, SDK, accuracy, circle, geolocation, user, location, position, gps" />
<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>
<script type='text/javascript'>
var map, datasource;
function GetMap() {
//Initialize a map instance.
map = new atlas.Map('myMap', {
view: 'Auto',
//Add your Azure Maps subscription key to the map SDK. Get an Azure Maps key at
authOptions: {
authType: 'subscriptionKey',
subscriptionKey: '<Your Azure Maps Key>'
//Wait until the map resources are ready.'ready', function () {
//Request the user's location
navigator.geolocation.getCurrentPosition(function (position) {
//Create a data source and add it to the map.
datasource = new atlas.source.DataSource();
//Create a circle from a Point feature by providing it a subType property set to "Circle" and radius property.
var userPosition = [position.coords.longitude, position.coords.latitude];
var userPoint =new
//Add a point feature with Circle properties to the data source for the users position. This will be rendered as a polygon.
datasource.add(new, {
subType: "Circle",
radius: position.coords.accuracy
//Add the users position point.
//Create a polygon layer to render the filled in area of the accuracy circle for the users position.
new atlas.layer.PolygonLayer(datasource, null, {
fillColor: 'rgba(0, 153, 255, 0.5)'
//Create a symbol layer to render the users position on the map.
new atlas.layer.SymbolLayer(datasource, null, {
filter: ['any', ['==', ['geometry-type'], 'Point'], ['==', ['geometry-type'], 'MultiPoint']] //Only render Point or MultiPoints in this layer.
//Center the map on the users position.
center: userPosition,
zoom: 15
}, function (error) {
//If an error occurs when trying to access the users position information, display an error message.
switch (error.code) {
alert('User denied the request for Geolocation.');
alert('Position information is unavailable.');
case error.TIMEOUT:
alert('The request to get user position timed out.');
case error.UNKNOWN_ERROR:
alert('An unknown error occurred.');
<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>User Location Accuracy Circle</legend>
This sample shows how to display the users position on the map with an accuracy circle.
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