ジオコーダの結果をリージョン名に制限
Mapbox Geocoding APIのmapbox-gl-geocoderコントロール機能を使って、結果領域を制限しながら、リージョンを検索します。
<!DOCTYPE html><html><head><meta charset="utf-8"><title>ジオコーダの結果をリージョン名に制限</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><script src="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.7.2/mapbox-gl-geocoder.min.js"></script><link rel="stylesheet" href="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.7.2/mapbox-gl-geocoder.css" type="text/css"> <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',style: 'mapbox://styles/mapbox/satellite-streets-v10',center: [146.359, -32.648],zoom: 4}); map.addControl(new MapboxGeocoder({accessToken: mapboxgl.accessToken, // Limit seach results to Australia.countries: 'au', // Use a bounding box to further limit results// to the geographic bounds representing the// region of New South Wales.bbox: [139.965, -38.03, 155.258, -27.839], // Apply a client-side filter to further limit results// to those strictly within the New South Wales region.filter: function (item) {// returns true if item contains New South Wales regionreturn item.context.some((i) => {// ID is in the form {index}.{id} per https://github.com/mapbox/carmen/blob/master/carmen-geojson.md// This example searches for the `region`// named `New South Wales`.return (i.id.split('.').shift() === 'region' &&i.text === 'New South Wales');});},mapboxgl: mapboxgl}));</script> </body></html>