我在mapbox gl js上完成了一张地图。
我正在尝试通过对经纬度坐标进行反向地理编码来获得一个placename
/地址。
我可以设法正常进行正向地理编码,但是可以查询以下内容(例如):
geocoder.query('New York')
但是我不能完全弄清楚如何用坐标反过来做到这一点。我已经尝试了以下方法,但无济于事:
// geocoder.query(126.981,37.539)
// geocoder.query("126.981,37.539")
// geocoder.query(37.539,126.981)
// geocoder.query("37.539,126.981")
我在文档中也找不到任何指向我正确方向的东西。因此,非常感谢您的帮助。
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>Set a point after Geocoder result</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
.built_address {
position: fixed;
top: 0;
left: 0;
background-color: white;
padding: 10px;
font-size: 12px;
font-family: Arial;
}
</style>
</head>
<body>
<script src='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.3.0/mapbox-gl-geocoder.min.js'></script>
<link rel='stylesheet' href='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.3.0/mapbox-gl-geocoder.css' type='text/css' />
<style>
#geocoder-container > div {
min-width:50%;
margin-left:25%;
}
</style>
<div id='map'></div>
<div class="built_address">LOREM IPSUM</div>
<script>
var built_address = '';
var user_coordinates;
var geocode_results;
mapboxgl.accessToken = 'pk.eyJ1IjoiZmFyaXNrYXNzaW0iLCJhIjoiSk1MaUthdyJ9.vkxtdDbYdLi524WwlKORBw';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/fariskassim/cjmszx78b266o2rlar02ytynj',
center: [127.017768, 37.59837],
zoom: 12
});
var geocoder = new MapboxGeocoder({
accessToken: mapboxgl.accessToken
});
map.addControl(geocoder);
// After the map style has loaded on the page, add a source layer and default
// styling for a single point.
map.on('load', function() {
map.addSource('single-point', {
"type": "geojson",
"data": {
"type": "FeatureCollection",
"features": []
}
});
map.addLayer({
"id": "point",
"source": "single-point",
"type": "circle",
"paint": {
"circle-radius": 10,
"circle-color": "#007cbf"
}
});
getUserLocation();
});
function getUserLocation() {
// request to allow user position
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
function showPosition(position) {
// get user current coordinates and center map on coordiates
console.log('L2', position)
//console.log(position.coords.latitude, position.coords.latitude)
user_coordinates = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
// draw user location on mao
map.getSource('single-point').setData({type: "Point", coordinates: [user_coordinates.lng,user_coordinates.lat]});
// geocoder.query(user_coordinates.lat, user_coordinates.lng)
// Listen for the `result` event from the MapboxGeocoder that is triggered when a user
// makes a selection and add a symbol that matches the result.
geocoder.on('result', function(ev) {
map.getSource('single-point').setData(ev.result.geometry);
console.log('ev',ev)
built_address = ev.result.place_name
});
}
} else {
// if device doesnt support location
console.log('device doesnt support location')
}
}; /* END getUserLocation(); */
</script>
</body>
</html>
答案 0 :(得分:1)
尝试geocoder.mapboxClient.geocodeReverse
:
geocoder.mapboxClient
.geocodeReverse({
latitude: user_coordinates.lat,
longitude: user_coordinates.lng
}, function(err, res) {
console.log(err, res)
});