Skip to content

Variable label placement with offset

Use text-variable-anchor-offset to allow high priority labels to shift position to stay on the map.

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Variable label placement with offset</title>
    <meta property="og:description" content="Use text-variable-anchor-offset to allow high priority labels to shift position to stay on the map." />
    <meta charset='utf-8'>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel='stylesheet' href='https://unpkg.com/maplibre-gl@4.4.0/dist/maplibre-gl.css' />
    <script src='https://unpkg.com/maplibre-gl@4.4.0/dist/maplibre-gl.js'></script>
    <style>
        body { margin: 0; padding: 0; }
        html, body, #map { height: 100%; }
    </style>
</head>
<body>
<div id="map"></div>

<script>
    const places = {
        'type': 'FeatureCollection',
        'features': [
            {
                'type': 'Feature',
                'properties': {
                    'description': 'Ford\'s Theater',
                    'icon': 'theatre'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.038659, 38.931567]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'The Gaslight',
                    'icon': 'theatre'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.003168, 38.894651]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'Horrible Harry\'s',
                    'icon': 'bar'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.090372, 38.881189]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'Bike Party',
                    'icon': 'bicycle'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.052477, 38.943951]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'Rockabilly Rockstars',
                    'icon': 'music'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.031706, 38.914581]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'District Drum Tribe',
                    'icon': 'music'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.020945, 38.878241]
                }
            },
            {
                'type': 'Feature',
                'properties': {
                    'description': 'Motown Memories',
                    'icon': 'music'
                },
                'geometry': {
                    'type': 'Point',
                    'coordinates': [-77.007481, 38.876516]
                }
            }
        ]
    };

    const map = new maplibregl.Map({
        container: 'map',
        style: 'https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL',
        center: [-77.04, 38.907],
        zoom: 11.15
    });

    map.on('load', () => {
        // Add a GeoJSON source containing place coordinates and information.
        map.addSource('places', {
            'type': 'geojson',
            'data': places
        });

        map.addLayer({
            'id': 'poi-labels',
            'type': 'symbol',
            'source': 'places',
            'layout': {
                'text-field': ['get', 'description'],
                'text-variable-anchor-offset': ['top', [0, 1], 'bottom', [0, -2], 'left', [1, 0], 'right', [-2, 0]],
                'text-justify': 'auto',
                'icon-image': ['concat', ['get', 'icon'], '_15']
            }
        });

        map.rotateTo(180, {duration: 10000});
    });
</script>
</body>
</html>