クリックしたポイント周囲のフィーチャを選択
マップをクリックして、queryRenderedFeature でフィーチャを問い合わせます。
<!DOCTYPE html><html><head><meta charset="utf-8"><title>クリックしたポイント周囲のフィーチャを選択</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',style: 'mapbox://styles/mapbox/streets-v11',center: [-98, 38.88],minZoom: 2,zoom: 3}); map.on('load', () => {// Add a custom vector tileset source. The tileset used in// this example contains a feature for every county in the U.S.// Each county contains four properties. For example:// {// COUNTY: "Uintah County",// FIPS: 49047,// median-income: 62363,// population: 34576// }map.addSource('counties', {'type': 'vector','url': 'mapbox://mapbox.82pkq93d'}); map.addLayer({'id': 'counties','type': 'fill','source': 'counties','source-layer': 'original','paint': {'fill-outline-color': 'rgba(0,0,0,0.1)','fill-color': 'rgba(0,0,0,0.1)'}},'settlement-label'); // Place polygon under these labels. map.addLayer({'id': 'counties-highlighted','type': 'fill','source': 'counties','source-layer': 'original','paint': {'fill-outline-color': '#484896','fill-color': '#6e599f','fill-opacity': 0.75},'filter': ['in', 'FIPS', '']},'settlement-label'); // Place polygon under these labels. map.on('click', (e) => {// Set `bbox` as 5px reactangle area around clicked point.const bbox = [[e.point.x - 5, e.point.y - 5],[e.point.x + 5, e.point.y + 5]];// Find features intersecting the bounding box.const selectedFeatures = map.queryRenderedFeatures(bbox, {layers: ['counties']});const fips = selectedFeatures.map((feature) => feature.properties.FIPS);// Set a filter matching selected features by FIPS codes// to activate the 'counties-highlighted' layer.map.setFilter('counties-highlighted', ['in', 'FIPS', ...fips]);});});</script> </body></html>