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POHow to draw a circle and search within the circle on a Google Maps API?
 

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  1. POHow to draw a circle and search within the circle on a Google Maps API?
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    <p>On my web page I have already a Google Maps API with a search bar (see code below) and at first the user pinpoints an address. Then the User is be able to search businesses around this point with a search bar. Before search is complete I'd like to draw a circle around this address for instance with a distance of 15 km. The search should show only results within this circle. It would be nice if you also could move the circle... How can I do this with Google Maps? </p> <pre><code>&lt;script type="text/javascript"&gt; var map = null; var geocoder = null; function initialize() { /* Initialize the Google Maps */ if (GBrowserIsCompatible()) { map = new GMap2(document.getElementById("map")); map.setCenter(new GLatLng(50.786916, 6.101360), 16); var customUI = map.getDefaultUI(); customUI.controls.scalecontrol = false; map.setUI(customUI); var options = { onSearchCompleteCallback:function(searcher){ var resultcontent = ''; if (searcher.results &amp;&amp; searcher.results.length &gt; 0) { $("#ResultGrid").clearGridData(true); for (var i = 0; i &lt; searcher.results.length; i++) { var result = searcher.results[i]; // Split address-lines to get Zipcode TempString = result.addressLines[1]; var ZipCode = TempString.split(/\b[^0-9]/); // construct the data array var InputData = {Firma:result.titleNoFormatting, Adresse:result.addressLines[0], Postleitzahl:ZipCode[0], Ort:result.city, Telefonnummer:result.phoneNumbers[0].number}; // Apply data to grid jQuery("#ResultGrid").addRowData(i, InputData); $("#Result").show("slow"); } } else { $("#Dialog").html("&lt;p&gt;&lt;span class=\"ui-icon ui-icon-info\" style=\"float:left; margin:0 7px 20px 0;\"&gt;&lt;/span&gt;Kein Suchergebnis!&lt;/p&gt;"); $("#Dialog").dialog("option", "title", "Hinweis:"); $("#Dialog").dialog("open"); $("#Dialog").html("Keine Ergebnisse gefunden!"); $("#Dialog").dialog("option", "title", "Hinweis:"); $("#Dialog").dialog("open"); } } }; localSearch = new google.maps.LocalSearch(options); map.addControl(localSearch); map.removeControl(GScaleControl); geocoder = new GClientGeocoder(); $("#map").hide("fast"); $("#Result").hide("fast"); } } function showAddress(address, CompleteAdd) { if (geocoder) { geocoder.getLatLng( address, function(point) { if (!point) { $("#Dialog").html("&lt;p&gt;&lt;span class=\"ui-icon ui-icon-info\" style=\"float:left; margin:0 7px 20px 0;\"&gt;&lt;/span&gt;"+address+" nicht gefunden&lt;/p&gt;"); $("#Dialog").dialog("option", "title", "Hinweis:"); $("#Dialog").dialog("open"); } else { map.setCenter(point, 16); var marker = new GMarker(point); map.addOverlay(marker); marker.openInfoWindowHtml(CompleteAdd); } } ); } $("#map").show("fast"); } &lt;/script&gt; </code></pre> <p></p> <pre><code>&lt;body onload="initialize()" onunload="GUnload()"&gt; &lt;div class="main" align="center"&gt; &lt;div id="Dialog"&gt; &lt;p&gt;&lt;span class="ui-icon ui-icon-info" style="float:left; "&gt;&lt;/span&gt;Dialog text&lt;/p&gt; &lt;/div&gt; &lt;br/&gt; &lt;div id="map" style="width: 850px; height:450px; padding:10px; font-size: medium; color:#853805; background-color:#FFE8CF;"&gt;&lt;/div&gt; &lt;/div&gt; &lt;/body&gt; </code></pre>
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