Examples

Animate a point

Animate the position of a point by updating a GeoJSON source on each frame.

Mapbox GL unsupported
Mapbox GL requires WebGL support. Please check that you are using a supported browser and that WebGL is enabled.
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>Animate a point</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.53.0/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v9',
center: [0, 0],
zoom: 2
});
var radius = 20;
function pointOnCircle(angle) {
return {
"type": "Point",
"coordinates": [
Math.cos(angle) * radius,
Math.sin(angle) * radius
]
};
}
map.on('load', function () {
// Add a source and layer displaying a point which will be animated in a circle.
map.addSource('point', {
"type": "geojson",
"data": pointOnCircle(0)
});
map.addLayer({
"id": "point",
"source": "point",
"type": "circle",
"paint": {
"circle-radius": 10,
"circle-color": "#007cbf"
}
});
function animateMarker(timestamp) {
// Update the data to a new position based on the animation timestamp. The
// divisor in the expression `timestamp / 1000` controls the animation speed.
map.getSource('point').setData(pointOnCircle(timestamp / 1000));
// Request the next frame of the animation.
requestAnimationFrame(animateMarker);
}
// Start the animation.
animateMarker(0);
});
</script>
</body>
</html>