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Add markers to a web map with a symbol layer

This example visualizes point features on a map using a symbol layer.

Upon loading, the map uses loadImage to add an image to the application, addSource to add a collection of points to the application, and then addLayer to draw the image and label on the map at each point location.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add markers to a web map with a symbol layer</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v3.7.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.7.0/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
<script>
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
const map = new mapboxgl.Map({
container: 'map',
// Choose from Mapbox's core styles, or make your own style with Mapbox Studio
style: 'mapbox://styles/mapbox/streets-v12',
bounds: [
[-128.99107, 22.62724],
[-63.35107, 50.26125]
]
});

map.on('load', () => {
// Add an image to use as a custom marker
map.loadImage(
'https://docs.mapbox.com/mapbox-gl-js/assets/custom_marker.png',
(error, image) => {
if (error) throw error;
map.addImage('custom-marker', image);
// Add a GeoJSON source with 2 points
map.addSource('points', {
'type': 'geojson',
'data': {
'type': 'FeatureCollection',
'features': [
{
// feature for Mapbox DC
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [
-77.03238901390978, 38.913188059745586
]
},
'properties': {
'title': 'Mapbox DC'
}
},
{
// feature for Mapbox SF
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [-122.414, 37.776]
},
'properties': {
'title': 'Mapbox SF'
}
}
]
}
});

// Add a symbol layer
map.addLayer({
'id': 'points',
'type': 'symbol',
'source': 'points',
'layout': {
'icon-image': 'custom-marker',
// get the title name from the source's "title" property
'text-field': ['get', 'title'],
'text-font': [
'Open Sans Semibold',
'Arial Unicode MS Bold'
],
'text-offset': [0, 1.25],
'text-anchor': 'top'
}
});
}
);
});
</script>

</body>
</html>
このコードスニペットは、YOUR_MAPBOX_ACCESS_TOKENあなたのMapboxアカウントのアクセストークンに置き換えるまで、期待通りに動作しません。
EXAMPLE
Alternative Marker Technique

See Add a default marker to a web map for a less complex approach to visualizing point features using the Marker class.

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