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POGoogle Map V3 .png groundoverlay opacity
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2012-06-21T06:16:10.057
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2012-06-22T13:35:29.210
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<p>I have created my first Google Map API with png overlays (thanks to @andresf for assistance).</p> <p>This map has multiple png ground overlays adjacent to each other and can be seen at <a href="http://www.earthstation.mobi/coverage.htm" rel="nofollow">http://www.earthstation.mobi/coverage.htm</a></p> <p>Question: How do I set the opacity (transparency?) on each overlay so that I can see the map detail under the overlay? I do not need to adjust this from the webpage, a preset coded into the script will suffice.</p> <p>The code of the page listed above is:</p> <pre><code> <!DOCTYPE html "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <title>Earthstation WIMAX Coverage</title> <script src="http://maps.googleapis.com/maps/api js?key=AIzaSyAGbZjXr2wr7dT2P3O5pNo5wvVF3JiaopU&sensor=false" type="text/javascript"></script> <script type="text/javascript"> function initialize() { var myOptions = { center: new google.maps.LatLng(-18.975750, 32.669184), zoom: 13, mapTypeId: google.maps.MapTypeId.HYBRID }; var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); //note to self co-ords are SW and then NE var imageBounds = new google.maps.LatLngBounds( new google.maps.LatLng(-19.000417,30.999583), new google.maps.LatLng(-17.999583,32.000417)); var oldmap = new google.maps.GroundOverlay( "http://www.earthstation.mobi/cloakpS19E031.png",imageBounds); oldmap.setMap(map); var imageBounds2 = new google.maps.LatLngBounds( new google.maps.LatLng(-19.000417,31.999583), new google.maps.LatLng(-17.999583,33.000417)); var oldmap = new google.maps.GroundOverlay( "http://www.earthstation.mobi/cloakpS19E032.png",imageBounds2); oldmap.setMap(map); var imageBounds3 = new google.maps.LatLngBounds( new google.maps.LatLng(-20.000417,30.999583), new google.maps.LatLng(-18.999583,32.000417)); var oldmap = new google.maps.GroundOverlay( "http://www.earthstation.mobi/cloakpS20E031.png",imageBounds3); oldmap.setMap(map); var imageBounds4 = new google.maps.LatLngBounds( new google.maps.LatLng(-20.000417,31.999583), new google.maps.LatLng(-18.999583,33.000417)); var oldmap = new google.maps.GroundOverlay( "http://www.earthstation.mobi/cloakpS20E032.png",imageBounds4); oldmap.setMap(map); } </script> </head> <body onload="initialize()"> <div id="map_canvas" style="width: 1000px; height: 600px"></div> </body> </html> </code></pre> <p>Thanks in anticipation Brian Zimbabwe</p>
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<maps><png><opacitymask>
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Google Map V3 .png groundoverlay opacity
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