Examples
Styles (11)Add a default markerAdd an animated icon to the mapAdd a generated icon to the mapGenerate and add a missing icon to the mapAdd a stretchable image to the mapAdd an icon 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 labelsDisplay HTML clusters with custom propertiesCreate and style clustersChange 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 pointsCreate a heatmap layerAdd a GeoJSON polygonAdd hillshadingCreate a gradient line using an expressionAdd multiple geometries from one GeoJSON sourceStyle ocean depth dataShow and hide layersUpdate a choropleth layer by zoom levelChange worldview of administrative boundariesVariable 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 (21)Customize camera animationsAnimate 3D buildings based on ambient soundsDisable map rotationCreate a draggable MarkerCreate a draggable pointFilter features within map viewFilter symbols by text inputCreate a hover effectDisplay a non-interactive mapChange a map's languageMeasure distancesGet coordinates of the mouse pointerHighlight features containing similar dataGet features under the mouse pointerSelect features around a clicked pointRestrict map panning to an areaFilter symbols by toggling a listCreate a time sliderHighlight features within a bounding boxFit to the bounds of a LineStringToggle interactionsCamera (12)Animate map camera around a pointAnimate a point along a routeCenter the map on a clicked symbolSlowly fly to a locationFly to a locationNavigate the map with game-like controlsJump to a series of locationsOffset the vanishing point using paddingPlay map locations as a slideshowFly to a location based on scroll positionSet pitch and bearingFit a map to a bounding boxControls and overlays (17)Animate a markerChange the default position for attributionAdd custom icons with MarkersDisable scroll zoomView a fullscreen mapLocate the userSwipe between mapsShow drawn polygon areaDisplay driving directionsAdd 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 (9)Supplement forward geocoding search results from another data sourceAccept coordinates as input to a geocoderUse a custom render function with a geocoderUse the geocoder without a mapLimit geocoder results to a named regionUse a custom camera animation with a geocoderPlace the geocoder input outside the mapLocalize the geocoder to a given languageSet a point after Geocoder resultBrowser support (1)Check if Mapbox GL JS is supportedInternationalization support (2)Use locally generated ideographsAdd support for right-to-left scripts

Measure distances

Click points on a map to create lines that measure distanced using turf.length.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Measure distances</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://api.mapbox.com/mapbox-gl-js/v1.10.1/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v1.10.1/mapbox-gl.css" rel="stylesheet" />
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<style>
.distance-container {
position: absolute;
top: 10px;
left: 10px;
z-index: 1;
}
.distance-container > * {
background-color: rgba(0, 0, 0, 0.5);
color: #fff;
font-size: 11px;
line-height: 18px;
display: block;
margin: 0;
padding: 5px 10px;
border-radius: 3px;
}
</style>
<div id="map"></div>
<div id="distance" class="distance-container"></div>
<script src="https://npmcdn.com/@turf/turf@5.1.6/turf.min.js"></script>
<script>
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
center: [2.3399, 48.8555],
zoom: 12
});
var distanceContainer = document.getElementById('distance');
// GeoJSON object to hold our measurement features
var geojson = {
'type': 'FeatureCollection',
'features': []
};
// Used to draw a line between points
var linestring = {
'type': 'Feature',
'geometry': {
'type': 'LineString',
'coordinates': []
}
};
map.on('load', function() {
map.addSource('geojson', {
'type': 'geojson',
'data': geojson
});
// Add styles to the map
map.addLayer({
id: 'measure-points',
type: 'circle',
source: 'geojson',
paint: {
'circle-radius': 5,
'circle-color': '#000'
},
filter: ['in', '$type', 'Point']
});
map.addLayer({
id: 'measure-lines',
type: 'line',
source: 'geojson',
layout: {
'line-cap': 'round',
'line-join': 'round'
},
paint: {
'line-color': '#000',
'line-width': 2.5
},
filter: ['in', '$type', 'LineString']
});
map.on('click', function(e) {
var features = map.queryRenderedFeatures(e.point, {
layers: ['measure-points']
});
// Remove the linestring from the group
// So we can redraw it based on the points collection
if (geojson.features.length > 1) geojson.features.pop();
// Clear the Distance container to populate it with a new value
distanceContainer.innerHTML = '';
// If a feature was clicked, remove it from the map
if (features.length) {
var id = features[0].properties.id;
geojson.features = geojson.features.filter(function(point) {
return point.properties.id !== id;
});
} else {
var point = {
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [e.lngLat.lng, e.lngLat.lat]
},
'properties': {
'id': String(new Date().getTime())
}
};
geojson.features.push(point);
}
if (geojson.features.length > 1) {
linestring.geometry.coordinates = geojson.features.map(function(
point
) {
return point.geometry.coordinates;
});
geojson.features.push(linestring);
// Populate the distanceContainer with total distance
var value = document.createElement('pre');
value.textContent =
'Total distance: ' +
turf.length(linestring).toLocaleString() +
'km';
distanceContainer.appendChild(value);
}
map.getSource('geojson').setData(geojson);
});
});
map.on('mousemove', function(e) {
var features = map.queryRenderedFeatures(e.point, {
layers: ['measure-points']
});
// UI indicator for clicking/hovering a point on the map
map.getCanvas().style.cursor = features.length
? 'pointer'
: 'crosshair';
});
</script>
</body>
</html>
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