GeoJSON ポリゴンを追加
塗りつぶしレイヤータイプを使用してポリゴンのスタイルを指定します。
<!DOCTYPE html><html><head><meta charset="utf-8"><title>GeoJSON ポリゴンを追加</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"><link href="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.css" rel="stylesheet"><script src="https://api.mapbox.com/mapbox-gl-js/v2.14.1/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', // container IDstyle: 'mapbox://styles/mapbox/light-v10', // style URLcenter: [-68.137343, 45.137451], // starting positionzoom: 5 // starting zoom}); map.on('load', () => {// Add a data source containing GeoJSON data.map.addSource('maine', {'type': 'geojson','data': {'type': 'Feature','geometry': {'type': 'Polygon',// These coordinates outline Maine.'coordinates': [[[-67.13734, 45.13745],[-66.96466, 44.8097],[-68.03252, 44.3252],[-69.06, 43.98],[-70.11617, 43.68405],[-70.64573, 43.09008],[-70.75102, 43.08003],[-70.79761, 43.21973],[-70.98176, 43.36789],[-70.94416, 43.46633],[-71.08482, 45.30524],[-70.66002, 45.46022],[-70.30495, 45.91479],[-70.00014, 46.69317],[-69.23708, 47.44777],[-68.90478, 47.18479],[-68.2343, 47.35462],[-67.79035, 47.06624],[-67.79141, 45.70258],[-67.13734, 45.13745]]]}}}); // Add a new layer to visualize the polygon.map.addLayer({'id': 'maine','type': 'fill','source': 'maine', // reference the data source'layout': {},'paint': {'fill-color': '#0080ff', // blue color fill'fill-opacity': 0.5}});// Add a black outline around the polygon.map.addLayer({'id': 'outline','type': 'line','source': 'maine','layout': {},'paint': {'line-color': '#000','line-width': 3}});});</script> </body></html>