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[英]How to use Mapbox Geocoding API in JavaScript to reverse geocode a point?
[英]How to geocode second marker in MapBox javascript?
我需要幫助使用地理編碼在 javascript MapBox map 上放置第二個標記。
我正在使用來自https://docs.mapbox.com/mapbox-gl-js/example/marker-from-geocode/的非常基本的示例,此示例對新西蘭惠靈頓進行地理編碼並將其放在 MapBox map 上。 如何使用此腳本獲得第二個標記?
代碼如下所示:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add a marker using a place name</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.2.0/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 src="https://unpkg.com/es6-promise@4.2.4/dist/es6-promise.auto.min.js"></script>
<script src="https://unpkg.com/@mapbox/mapbox-sdk/umd/mapbox-sdk.min.js"></script>
<script>
mapboxgl.accessToken = 'pk.eyJ1Ijoic3F1ZWV6ZW9qIiwiYSI6ImNrbm04YjNrbTBvZmQycG1vd25wbGVnajgifQ.DnctRlqljTmn-joUThVpXA';
var mapboxClient = mapboxSdk({ accessToken: mapboxgl.accessToken });
mapboxClient.geocoding
.forwardGeocode({
query: 'Wellington, New Zealand',
autocomplete: false,
limit: 1
})
.send()
.then(function (response) {
if (
response &&
response.body &&
response.body.features &&
response.body.features.length
) {
var feature = response.body.features[0];
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
center: feature.center,
zoom: 10
});
// Create a marker and add it to the map.
new mapboxgl.Marker().setLngLat(feature.center).addTo(map);
}
});
</script>
</body>
</html>
如何添加第二個標記? 對於新西蘭的第二個城市,例如新西蘭的奧克蘭?
謝謝!
我花了幾個小時的時間,但這是我最終得到的解決方案。 歡迎任何意見、建議和/或改進。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>MapBox5</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.2.0/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 src="https://unpkg.com/es6-promise@4.2.4/dist/es6-promise.auto.min.js"></script>
<script src="https://unpkg.com/@mapbox/mapbox-sdk/umd/mapbox-sdk.min.js"></script>
<!-- From https://docs.mapbox.com/mapbox-gl-js/example/mapbox-gl-geocoder/ -->
<script>
mapboxgl.accessToken = '<<myAccessToken>>';
var mapboxClient = mapboxSdk({ accessToken: mapboxgl.accessToken });
//--- Declare an Array of Locations that Need Markers...
var locations = ["123 Main St, Anytown, CA, 98765, United States",
"321 Front St, Anytown, CA, 98765, United States"];
//--- Declare Empty Array for Longitute-Latitude Centers...
var lnglat = Array()
//--- Draw the Map Centered...
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
center: [-70.070159, 40.155872],
zoom: 10
});
//--- For Each Location Geocode the Address and Place Marker on Map...
locations.forEach(myGeocoder);
function myGeocoder(item, index) {
mapboxClient.geocoding
.forwardGeocode({
query: item,
autocomplete: false,
limit: 1
})
.send()
.then(function (response) {
if (response &&
response.body &&
response.body.features &&
response.body.features.length
) {
//--- Get the Response from the MapBox Server...
var feature = response.body.features[0];
//--- Console Display Where We're at in the List...
console.log(locations[index]);
console.log(response.body.features[0].center);
//--- Get Longitude-Latitute Center of this Location from Response...
lnglat[index] = response.body.features[0].center
// Create a marker and add it to the map.
new mapboxgl.Marker().setLngLat(lnglat[index]).addTo(map);
}
});
}
</script>
</body>
</html>
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