我在mapbox Studio上有一个图层，其中包含在地图上绘制的所有邮政编码，并且我正在使用访问键和图层ID对其进行访问，
我只想过滤半径内的邮政编码（标记）
jing35711 回答：如何使用半径和纬度过滤地图框特征
草皮提供了pointsWithinPolygon()功能，可帮助您找到圆内的任何点。这是一个示例：
*s[1]a2mapboxgl.accessToken = 'pk.eyJ1IjoicGFybmRlcHUiLCJhIjoiY2l6dXZ5OXVkMDByZDMycXI2NGgyOGdyNiJ9.jyTchGQ8N1gjPdra98qRYg';
var map = new mapboxgl.Map({
container: 'map',style: 'mapbox://styles/mapbox/light-v10',center: [-46.6062,-23.5513],zoom: 11
});
map.on('load',function () {
// List of your marker locations
var points = turf.points([
[-46.6318,-23.5523],[-46.6246,-23.5325],[-46.6062,[-46.663,-23.554],[-46.643,-23.557]
]);
// Create circle with radius
var center = [-46.6062,-23.5513];
var radius = 3;
var options = {steps: 10,units: 'kilometers',properties: {foo: 'bar'}};
var circle = turf.circle(center,radius,options);
// Find point within circle
var markerWithin = turf.pointsWithinPolygon(points,circle);
console.log("Found: " + markerWithin.features.length + " points");
// Draw circle polygon
map.addLayer({
'id': 'circle','type': 'fill','source': {
'type': 'geojson','data': circle
},'layout': {},'paint': {
'fill-color': '#525252','fill-opacity': 0.2
}
});
// Draw all points
map.addLayer({
'id': 'points','type': 'circle','data': points
},'paint': {
'circle-radius': 5,'circle-color': 'red','circle-opacity': 1
}
});
// Draw marker with in circle
markerWithin.features.forEach(function(marker) {
// Create marker
new mapboxgl.Marker()
.setLngLat(marker.geometry.coordinates)
.addTo(map);
});
});