Google 地图地理编码（GLatLng 地址）

发布于 2024-09-04 06:10:10 字数 510 浏览 11 评论 0原文

我正在尝试使用 Google Maps JavaScript API 从两个地址点绘制测地折线。

var polyOptions = {geodesic:true};
var polyline = new GPolyline([
    new GLatLng(),
    new GLatLng()
  ], "#f36c25", 5, 0.8, polyOptions
);

map.addOverlay(polyline);

if (GBrowserIsCompatible()) {
  map.addOverlay(polyline);
}

有人可以告诉我如何将地址动态地理编码为 GLatLng 坐标吗？阅读 Google 的 API 文档后，我有点困惑。

原文

I am trying to draw a geodesic polyline with Google Maps JavaScript API from two address points.

var polyOptions = {geodesic:true};
var polyline = new GPolyline([
    new GLatLng(),
    new GLatLng()
  ], "#f36c25", 5, 0.8, polyOptions
);

map.addOverlay(polyline);

if (GBrowserIsCompatible()) {
  map.addOverlay(polyline);
}

Could someone tell me how can I dynamically geocode an address into GLatLng coordinates? I am a little confused after reading Google's API documentation.

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誰認得朕 2024-09-11 06:10:10

您可能想查看以下示例。首先，它尝试对 address1 进行地理编码。如果成功，它会尝试对 address2 进行地理编码。如果两者都成功，它将在两个坐标和两个标记之间绘制测地折线：

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
  <title>Google Maps API Geocoding Demo</title> 
  <script src="http://maps.google.com/maps/api/js?sensor=false" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var address1 = 'London, UK';
    var address2 = 'New York, US';

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 2,
      center: new google.maps.LatLng(35.00, -25.00),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var gc = new google.maps.Geocoder();

    gc.geocode({'address': address1}, function (res1, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        gc.geocode({'address': address2}, function (res2, status) {
          if (status == google.maps.GeocoderStatus.OK) {
            new google.maps.Marker({
              position: res1[0].geometry.location,
              map: map
            });

            new google.maps.Marker({
              position: res2[0].geometry.location,
              map: map
            });

            new google.maps.Polyline({
              path: [
                res1[0].geometry.location,
                res2[0].geometry.location
              ],
              strokeColor: '#FF0000',
              geodesic: true,
              map: map
            });
          }
        });
      }            
    });

  </script>
</body>
</html>

屏幕截图：

Google Maps API Geocoding Demo

You may want to check out the following example. First it tries to geocode address1. If it succeeds, it tries to geocode address2. If both succeed, it plots the geodesic polyline between the two coordinates, and two markers:

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
  <title>Google Maps API Geocoding Demo</title> 
  <script src="http://maps.google.com/maps/api/js?sensor=false" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var address1 = 'London, UK';
    var address2 = 'New York, US';

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 2,
      center: new google.maps.LatLng(35.00, -25.00),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var gc = new google.maps.Geocoder();

    gc.geocode({'address': address1}, function (res1, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        gc.geocode({'address': address2}, function (res2, status) {
          if (status == google.maps.GeocoderStatus.OK) {
            new google.maps.Marker({
              position: res1[0].geometry.location,
              map: map
            });

            new google.maps.Marker({
              position: res2[0].geometry.location,
              map: map
            });

            new google.maps.Polyline({
              path: [
                res1[0].geometry.location,
                res2[0].geometry.location
              ],
              strokeColor: '#FF0000',
              geodesic: true,
              map: map
            });
          }
        });
      }            
    });

  </script>
</body>
</html>

Screenshot:

Google Maps API Geocoding Demo

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