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" /><script src="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.js"></script><link href="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.css" rel="stylesheet" /><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/v4.4.2/mapbox-gl-geocoder.min.js"></script><linkrel="stylesheet"href="https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v4.4.2/mapbox-gl-geocoder.css"type="text/css"/><!-- Promise polyfill script required to use Mapbox GL Geocoder in IE 11 --><script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.min.js"></script><script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.min.js"></script><div id="map"></div> <script> mapboxgl.accessToken = '<your access token here>';var map = new mapboxgl.Map({container: 'map',style: 'mapbox://styles/mapbox/streets-v11',center: [146.359, -32.648],zoom: 4}); map.addControl(new MapboxGeocoder({accessToken: mapboxgl.accessToken, // limit results to Australiacountries: 'au', // further limit results to the geographic bounds representing the region of// New South Walesbbox: [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 regionfilter: function(item) {// returns true if item contains New South Wales regionreturn item.context.map(function(i) {// id is in the form {index}.{id} per https://github.com/mapbox/carmen/blob/master/carmen-geojson.md// this example attempts to find the `region` named `New South Wales`return (i.id.split('.').shift() === 'region' &&i.text === 'New South Wales');}).reduce(function(acc, cur) {return acc || cur;});},mapboxgl: mapboxgl}));</script> </body></html>