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如何在Google Maps JS API中獲取仍包含一組Lat / Long坐標的最小LatLngBounds?

[英]How can I get the smallest LatLngBounds that still contains a set of Lat/Long Coordinates in Google Maps JS API?

我需要在地圖上繪制一組坐標以響應用戶選擇,當它發生時,我想平移地圖以專注於那組點。 如何找到包含所有坐標的最小邊界框(LatLngBounds)?

除了@Crescent Fresh上面指出Stack Overflow帖子 (使用v2 API)之外,你想要使用的方法是LatLngBounds.extend()

以下是使用v3 API的完整示例:

<!DOCTYPE html>
<html> 
<head> 
   <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
   <title>Google Maps LatLngBounds.extend() Demo</title> 
   <script src="http://maps.google.com/maps/api/js?sensor=false" 
           type="text/javascript"></script> 
</head> 
<body> 
   <div id="map" style="width: 400px; height: 300px;"></div> 

   <script type="text/javascript"> 

   var map = new google.maps.Map(document.getElementById('map'), { 
     mapTypeId: google.maps.MapTypeId.TERRAIN
   });

   var markerBounds = new google.maps.LatLngBounds();

   var randomPoint, i;

   for (i = 0; i < 10; i++) {
     // Generate 10 random points within North East America
     randomPoint = new google.maps.LatLng( 39.00 + (Math.random() - 0.5) * 20, 
                                          -77.00 + (Math.random() - 0.5) * 20);

     // Draw a marker for each random point
     new google.maps.Marker({
       position: randomPoint, 
       map: map
     });

     // Extend markerBounds with each random point.
     markerBounds.extend(randomPoint);
   }

   // At the end markerBounds will be the smallest bounding box to contain
   // our 10 random points

   // Finally we can call the Map.fitBounds() method to set the map to fit
   // our markerBounds
   map.fitBounds(markerBounds);

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

截圖:

谷歌地圖LatLngBounds.extend()演示

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