views:

180

answers:

1

Hello,

Google Maps API can build a Direction from a source to a destination. In the following Google's example, each step are published into the HTML code: http://code.google.com/apis/maps/documentation/examples/directions-simple.html

I would like to get the Geocoding of each step of this direction, and store them in a array. I believe it's possible, but I don't see how to process.

Many Thanks for any answer. Regards

+2  A: 

Yes, you can get the individual steps from GDirections very easily.

First you have to make sure to pass the getSteps: true option when you call the GDirections.load() method. Then you can simply iterate through GDirections.getRoute(i).getStep(j), as in the following example:

<!DOCTYPE html>
<html> 
<head> 
   <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
   <title>Google Maps Simple Directions Demo</title> 
   <script src="http://maps.google.com/maps?file=api&amp;amp;v=2&amp;amp;sensor=false" 
              type="text/javascript"></script>
</head> 
<body onunload="GUnload()">
   <div id="map" style="width: 550px; height: 400px"></div> 

   <script type="text/javascript"> 
      var map = new GMap2(document.getElementById("map"));
      var directions = new GDirections(map);

      directions.load('from: London, UK to: Glasgow, UK', { getSteps: true });

      GEvent.addListener(directions, "load", function() {
         if (directions.getNumRoutes() > 0) {
            for (var i = 0; i < directions.getRoute(0).getNumSteps(); i++) {
               directions.getRoute(0).getStep(i).getLatLng().lat();
               directions.getRoute(0).getStep(i).getLatLng().lng();
               directions.getRoute(0).getStep(i).getDescriptionHtml();
               directions.getRoute(0).getStep(i).getPolylineIndex();
               directions.getRoute(0).getStep(i).getDistance().meters;
               directions.getRoute(0).getStep(i).getDuration().seconds;
            }
         }
      });
   </script> 
</body> 
</html>

Further reading and reference:

Daniel Vassallo
Thank you, Daniel Vassallo! Just awesome example! Very helpful.
Puru puru rin..