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October 1, 2020 15:49
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Mapbox single country label and road filtering using iso_3166_1 and match
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8" /> | |
<title>Draw GeoJSON points</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> | |
<div id="map"></div> | |
<script> | |
mapboxgl.accessToken = 'pk.eyJ1IjoiamJyYW5pZ2FuIiwiYSI6ImNrYXIwZDhoejA2MHkyeG1zbnZkZDY4Z2oifQ.Xc8xWfKTr5xFOd7cNnXxqQ'; | |
var map = new mapboxgl.Map({ | |
container: 'map', | |
style: 'mapbox://styles/mapbox/streets-v11', | |
center: [5.5045, 52.219], | |
zoom: 6.5 | |
}); | |
map.on('load', function() { | |
map.addSource('countries-geojson', { | |
'type': 'geojson', | |
'data': { | |
'type': 'FeatureCollection', | |
'features': [] | |
} | |
}); | |
map.addLayer({ | |
'id': 'country', | |
'type': 'line', | |
'source': 'countries-geojson', | |
'layout': {}, | |
'paint': { | |
'line-color': 'red', | |
} | |
}); | |
const layers = map.getStyle().layers; | |
layers.forEach((layer) => { | |
const currentFilters = map.getFilter(layer.id); | |
if (layer.id.includes('label') || layer.id.includes('shield') || layer.id.includes('road')) { | |
if (currentFilters) { | |
map.setFilter(layer.id, ['all', currentFilters, ["match", ["get", "iso_3166_1"], ["NL"], true, false]]); | |
} | |
else { | |
map.setFilter(layer.id, ["match", ["get", "iso_3166_1"], ["NL"], true, false]); | |
} | |
} | |
}); | |
}); | |
</script> | |
</body> | |
</html> |
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