XML Parsing to Google Maps

p00kie Fri, 19 Dec 2008 11:17:14 -0800

Hello!

Having this problem parsing XML file and creating markers from data
within XML file.


Firebug says that latD is not available. However, inspecting the DOM,
latD and lonD are completely populated with the data that I have from
the XML file.

So why is latD within initialize() not available? Since even the fact
that initialize is not called until body is loaded.

Code:
<head>
<script src="http://maps.google.com/maps?file=api&amp;v=2amp;key="aaa";
type="text/javascript"></script>
<script type="text/javascript" src="http://www.google.com/jsapi";></
script>
<script type = "text/javascript">
var fileName = String($fileLoc);
var latD;
var lonD;

 function loadXML() {
         var request = GXmlHttp.create();
         request.open("GET", fileName, true);
         request.onreadystatechange = function() {
         if(request.readyState == 4) {
            var xml = GXml.parse(request.responseText);
            latD = xml.documentElement.getElementsByTagName
("latitude");
            lonD = xml.documentElement.getElementsByTagName
("longitude");
          }
   }
   request.send(null);
}

loadXML();

function initialize() {
      var map = new GMap2(document.getElementById("map_canvas"));
      map.addControl(new GLargeMapControl());
      map.addControl(new GMapTypeControl());

            map.enableScrollWheelZoom();
            map.setCenter(new GLatLng(0, 0), 0);
            map.setMapType(G_HYBRID_MAP);

            var bounds = new GLatLngBounds();
            for (var i = 0; i < latD.length; i++) {
                lat = latD[i].childNodes[0].nodeValue;
                lon = lonD[i].childNodes[0].nodeValue;

                var point = new GLatLng(lat, lon);
                var marker = new GMarker(point);
                map.addOverlay(marker);
                bounds.extend(point);
            }

            // Set center and zoom for map display based on markers
            map.setZoom(map.getBoundsZoomLevel(bounds) - 1);
            map.setCenter(bounds.getCenter());

        }

    </script>
    </head>
        <body onload = "initialize()" onunload = "GUnload()">

        <div id="map_canvas" style="width:1000px; height: 600px"></
div>
    |;



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XML Parsing to Google Maps

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