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POUse xmlhttp data for Google Maps api v3 polyline
 

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  1. POUse xmlhttp data for Google Maps api v3 polyline
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    <p>I use an xmlhttprequest to get coordinates out of a mysql database. This works with the following code:</p> <pre><code>var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.open("GET","http://skyline-va.de/phpvms/lib/skins/crystal/mysql.php?id="+this.flightdetails.id,true); xmlhttp.send(); </code></pre> <p>Looking at the firebug console I see that this outputs the data in this format</p> <pre><code>new google.maps.LatLng(51.2848358165405, 6.77062893232108), new google.maps.LatLng(51.2848358165405, 6.77062893232108), new google.maps.LatLng(51.2848358165405, 6.77062893232108), new google.maps.LatLng(51.2848358165405, 6.77062893232108), </code></pre> <p>and so on.<br> But how can I use this to display a polyline in Google Maps api? I've already tried searching google, unfortunately I couldn't find anything useful. I've also tried several things without success.</p> <p>Thanks!</p> <p>EDIT: Here is the map I am working on right now: <a href="http://skyline-va.de/phpvms/index.php/acars/viewmapbig" rel="nofollow">http://skyline-va.de/phpvms/index.php/acars/viewmapbig</a><br> Basically what I want to do is if you click on one of the planes, the flightpath should be displayed as well. I have the coordinates stored in a database but I have to do the query after the plane is clicked.</p> <p>EDIT2: I managed to output the data in xml format with the google documentary. But I can't get the code to work supplied by Google to display the data. I want to add every new point that comes through the for command to an array.</p> <pre><code> function downloadUrl(url,callback) { var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest; request.open('GET', url, true); request.send(null); } var flightPlanCoordinates = [ ]; downloadUrl("http://skyline-va.de/phpvms/lib/skins/crystal/output-xml.php?id="+this.flightdetails.id, function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); for (var i = 0; i &lt; markers.length; i++) { flightPlanCoordinates.push(new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng")))); }; }); flightPath2 = new google.maps.Polyline({ path: flightPlanCoordinates, strokeColor: "#FF0000", strokeOpacity: 1.0, strokeWeight: 2 }); flightPath2.setMap(map); </code></pre> <p>But that doesn't seem to work.</p>
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    1. USLL1997
    1. USLL1997
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    1. COYou should consider to use a more suitable format(json or xml). Currently the returned data may only be processed via eval
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      1. USDr.Molle
    2. COThe php file now outputs xml data but I still have problems displaying the polyline on the map.
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      1. POUse xmlhttp data for Google Maps api v3 polyline
      1. USLL1997
 

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