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//1.
var bounds:LatLngBounds = new LatLngBounds();
for each(var mapObject in tripMessages){
    var currentLatLon:LatLng = new LatLng(mapObject.latitude, 
	                                       mapObject.longitude);
    bounds.extend(currentLatLon);
}
 
//2.
var center:LatLng = bounds.getCenter();
 
//3.
map.setZoom(map.getBoundsZoomLevel(bounds));
 
//4.
map.setCenter(center);

3 Responses to “Calculate and Set Bounds (Bounding Box) from Points in Google Maps Flash [Update]”

1. Emil says:

   4 August 2009 at 13:56

   Hi there,

   There’s no need to fo all those 4 IFs to test for the min/max lat/lon, as there is a methot for the LatLngBounds object that does that for you:

   bounds.extend(Point);

   Along the same idea, there is no need to compute the center, as it also has a method:

   bounds.getCenter();

   So all you have to do is define the LatLngBounds object, add the points to it using the extend method, and at the end, just call getBoundsZoomLevel and getCenter to obtain what you need.

   Regards,
   Emil
2. johannes says:

   4 August 2009 at 15:15

   Wow, Emil, you have been completely right!

   I changed the code appropriately and now it is much shorter.

   However, I still have the same problem with that code that I had with the other code before: sometimes the bounding box will not be calculated appropriately and is one zoom step too small. I don’t know whether that is a problem of the code or of the Google Maps API as I don’t know how map.getBoundsZoomLevel(bounds) works.
3. Patrick says:

   3 December 2009 at 15:08

   Thanks so much for this bit of code -saved me hours