Examples
Styles (10)Add an animated icon to the mapAdd a generated icon to the mapGenerate and add a missing icon to the mapAdd an icon to the mapAdd a stretchable image to the mapDisplay a map with a custom styleRender world copiesDisplay a satellite mapChange a map's styleDisplay a mapLayers (32)Display buildings in 3DExtrude polygons for 3D indoor mappingAdd a 3D modelAdjust a layer's opacityAnimate a lineAnimate a series of imagesAnimate a pointChange building color based on zoom levelChange the case of labelsCreate and style clustersDisplay HTML clusters with custom propertiesChange a layer's color with buttonsAdd a custom style layerStyle circles with a data-driven propertyStyle lines with a data-driven propertyDisplay and style rich text labelsUse a fallback imageAdd a pattern to a polygonAdd a new layer below labelsAdd a GeoJSON lineDraw GeoJSON pointsAdd a GeoJSON polygonCreate a heatmap layerAdd hillshadingCreate a gradient line using an expressionAdd multiple geometries from one GeoJSON sourceStyle ocean depth dataShow and hide layersChange worldview of administrative boundariesUpdate a choropleth layer by zoom levelVariable label placementVisualize population densitySources (10)Add a canvas sourceJoin local JSON data with vector tile geometriesAdd an imageAdd live realtime dataUpdate a feature in realtimeAdd a raster tile sourceAdd a third party vector tile sourceAdd a vector tile sourceAdd a videoAdd a WMS sourceUser interaction (20)Animate 3D buildings based on ambient soundsDisable map rotationCreate a draggable MarkerCreate a draggable pointFilter features within map viewFilter symbols by text inputFilter symbols by toggling a listCreate a hover effectDisplay a non-interactive mapChange a map's languageMeasure distancesGet coordinates of the mouse pointerHighlight features containing similar dataSelect features around a clicked pointGet features under the mouse pointerRestrict map panning to an areaCreate a time sliderToggle interactionsFit to the bounds of a LineStringHighlight features within a bounding boxCamera (11)Animate map camera around a pointAnimate a point along a routeCenter the map on a clicked symbolFit a map to a bounding boxSlowly fly to a locationNavigate the map with game-like controlsJump to a series of locationsPlay map locations as a slideshowFly to a location based on scroll positionSet pitch and bearingFly to a locationControls and overlays (17)Animate a markerChange the default position for attributionAdd custom icons with MarkersDisable scroll zoomView a fullscreen mapLocate the userSwipe between mapsDisplay driving directionsShow drawn polygon areaAdd a geocoderAdd a marker using a place nameDisplay map navigation controlsShow polygon information on clickDisplay a popup on clickDisplay a popup on hoverDisplay a popupAttach a popup to a marker instanceGeocoder (8)Use a custom render function with a geocoderAccept coordinates as input to a geocoderLimit geocoder results to a named regionPlace the geocoder input outside the mapLocalize the geocoder to a given languageUse a custom camera animation with a geocoderSet a point after Geocoder resultSupplement forward geocoding search results from another data sourceBrowser support (1)Check for browser supportInternationalization support (2)Use locally generated ideographsAdd support for right-to-left scripts

Update a feature in realtime

Change an existing feature on your map in realtime by updating its data.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Update a feature in realtime</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://api.mapbox.com/mapbox-gl-js/v1.9.0/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v1.9.0/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 src="//d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>
mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/satellite-v9',
zoom: 0
});
map.on('load', function() {
// We use D3 to fetch the JSON here so that we can parse and use it separately
// from GL JS's use in the added source. You can use any request method (library
// or otherwise) that you want.
d3.json(
'https://docs.mapbox.com/mapbox-gl-js/assets/hike.geojson',
function(err, data) {
if (err) throw err;
// save full coordinate list for later
var coordinates = data.features[0].geometry.coordinates;
// start by showing just the first coordinate
data.features[0].geometry.coordinates = [coordinates[0]];
// add it to the map
map.addSource('trace', { type: 'geojson', data: data });
map.addLayer({
'id': 'trace',
'type': 'line',
'source': 'trace',
'paint': {
'line-color': 'yellow',
'line-opacity': 0.75,
'line-width': 5
}
});
// setup the viewport
map.jumpTo({ 'center': coordinates[0], 'zoom': 14 });
map.setPitch(30);
// on a regular basis, add more coordinates from the saved list and update the map
var i = 0;
var timer = window.setInterval(function() {
if (i < coordinates.length) {
data.features[0].geometry.coordinates.push(
coordinates[i]
);
map.getSource('trace').setData(data);
map.panTo(coordinates[i]);
i++;
} else {
window.clearInterval(timer);
}
}, 10);
}
);
});
</script>
</body>
</html>
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