All docsMapbox GL JSExamplesAdd live realtime data

Add live realtime data

Use realtime location data streams to move a symbol on your map with setInterval.

Referencing images in a style's sprite

This example uses the Mapbox Streets style. The icon-image used in this example comes from the Mapbox Streets style's sprite.

To view all available images in a style's sprite or add additional images, open the style in Mapbox Studio and click the Images tab. To add a new image to the style at runtime see the Add an icon to the map example.

<!DOCTYPE html>
<meta charset="utf-8">
<title>Add live realtime data</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="" rel="stylesheet">
<script src=""></script>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
<div id="map"></div>
mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
const map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
zoom: 0
map.on('load', async () => {
// Get the initial location of the International Space Station (ISS).
const geojson = await getLocation();
// Add the ISS location as a source.
map.addSource('iss', {
type: 'geojson',
data: geojson
// Add the rocket symbol layer to the map.
'id': 'iss',
'type': 'symbol',
'source': 'iss',
'layout': {
// This icon is a part of the Mapbox Streets style.
// To view all images available in a Mapbox style, open
// the style in Mapbox Studio and click the "Images" tab.
// To add a new image to the style at runtime see
'icon-image': 'rocket-15'
// Update the source from the API every 2 seconds.
const updateSource = setInterval(async () => {
const geojson = await getLocation(updateSource);
}, 2000);
async function getLocation(updateSource) {
// Make a GET request to the API and return the location of the ISS.
try {
const response = await fetch(
{ method: 'GET' }
const { latitude, longitude } = await response.json();
// Fly the map to the location.
center: [longitude, latitude],
speed: 0.5
// Return the location of the ISS as GeoJSON.
return {
'type': 'FeatureCollection',
'features': [
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [longitude, latitude]
} catch (err) {
// If the updateSource interval is defined, clear the interval to stop updating the source.
if (updateSource) clearInterval(updateSource);
throw new Error(err);