Clear markers in Google Maps

[mikeog]

Can anybody tell me how to clear the location marker in Google Maps when the map is centered on a new location? I am useless with JScript so I am struggling.

 

I am using the following script to clear the existing markers (not working) and to display the new position and set the marker (working).

 

TheAddress := Uniedit1.Text;

UniSession.AddJS(

'function clearOverlays() {'+

'if (window.markersArray.length > 0) {'+

'for (var idx=0;idx<=window.markersArray.length;idx++){'+

'window.markersArray[idx].setMap(null);'+

'}'+

'}'+

'};'+

 

'function codeAddress() {'+

'var geocoder = new google.maps.Geocoder();'+

'var address = '+QuotedStr(TheAddress)+';'

'geocoder.geocode( { ''address'': address}, function(results, status) {'+

'if (status == google.maps.GeocoderStatus.OK) {'+

'if (typeof googleMap=="object") {googleMap.setCenter(results[0].geometry.location)};'+

'var marker = new google.maps.Marker({'+

'map: googleMap,'+

'position: results[0].geometry.location'+

'});'+

'window.markersArray.push(marker);'+

'googleMap.setZoom(18);'+

'} else {'+

'alert(''Geocode was not successful for the following reason: '' + status);'+

'}'+

'});'+

'};'+

'clearOverlays();'+

'codeAddress();'

);

 

The error that I am getting is "Cannot call method setMap of undefined" which suggest that the markersArray is not visible to the function. I have tried adding the global markers array in the HTML of the UniHTMLFrame and as a global variable prior to running the script but I am only going round in circles at this stage.

 

Any suggestions would be appreciated.

 

Mike

[mikeog]

Just in case anybody else is interested, I tried a variety of "solutions" that I found in online searches and none of them worked. So I gave up on the idea of clearing the markers and simply reloaded a fresh map whenever the location changed.

[lema]

Hi Mike.

 

Why not use the:

http://forums.unigui.com/index.php?/topic/1225-google-map-new-component/

[mikeog]

Hi Lema,

 

I didn't use Patmap's component because I was looking for a simple solution and I didn't particularly want to install a dedicated map component.

 

However, I just looked at the demo of your component and it looks very good. Maybe I will install a map component after all

 

Thanks,

Mike