Google Elevation API with AJAX?

Question

I am trying to use the Google Elevation API with the getJSON function of JQuery.

I am using this code which is using JSONP :

jQuery.getJSON("http://maps.googleapis.com/maps/api/elevation/json?locations=23.444,45.4545&sensor=false&jsoncallback=?", function(json){
    alert("a");
});

I can see in Firebug that the GET request is correctly send and I receive the correct response from Google :

{
  "status": "OK",
  "results": [ {
    "location": {
      "lat": 23.4440000,
      "lng": 45.4545000
    },
    "elevation": 816.7996216
  } ]
}

However I never the Alert and I get this error from Firebug :

invalid label
"status": "OK",\n

I am using the Google Maps API v2 so I connato use the build in method.

Is there any way to get the elevation with the Google Elevation API via an AJAX request and without creating a proxy?

Thanks for your help.

Benjamin

Answer 1

The Google elevation API don't support JSONP (Thanks to Nick Craver for the explanation) and I cannot use the ElevationService which is only available for the v3 Google Maps API.

So I decided to use an other webservice to get the elevation :

http://www.geonames.org/export/web-services.html#astergdem

example : http://ws.geonames.org/astergdemJSON?lat=X&lng=Y&callback=?

This webservice support JSONP, so it can be use easily with JQuery and the getJSON method.

Benjamin