Draw GeoJSON points
Draw points from a GeoJSON collection to a map.
<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <title></title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.36.0/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.36.0/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/light-v9',
    center: [-96, 37.8],
    zoom: 3
});

map.on('load', function () {

    map.addLayer({
        "id": "points",
        "type": "symbol",
        "source": {
            "type": "geojson",
            "data": {
                "type": "FeatureCollection",
                "features": [{
                    "type": "Feature",
                    "geometry": {
                        "type": "Point",
                        "coordinates": [-77.03238901390978, 38.913188059745586]
                    },
                    "properties": {
                        "title": "Mapbox DC",
                        "icon": "monument"
                    }
                }, {
                    "type": "Feature",
                    "geometry": {
                        "type": "Point",
                        "coordinates": [-122.414, 37.776]
                    },
                    "properties": {
                        "title": "Mapbox SF",
                        "icon": "harbor"
                    }
                }]
            }
        },
        "layout": {
            "icon-image": "{icon}-15",
            "text-field": "{title}",
            "text-font": ["Open Sans Semibold", "Arial Unicode MS Bold"],
            "text-offset": [0, 0.6],
            "text-anchor": "top"
        }
    });
});
</script>

</body>
</html>
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