GroundOverlay And TimeSpan On Embedded Google Earth - kml

Question

Am attempting to add a ground overlay to a Google Earth embed. The ground overlay has a series of six transparent gif images -- the URLs of which are dynamically added to a KML file. Only question is -- now how do I add the ground overlay using ge.createGroundOverlay('') when I have no 'icon' -- it's a URL. Tried to add it using a network link, but all six images are thrown on there and there is no slider to animate them.

Answer 1

Take a look the tutorial and code examples:
https://developers.google.com/earth/documentation/geometries#groundoverlay
To ensure animation works you must set the time elements of the groundOverlay: timeSpan or timeStamp.
See https://developers.google.com/earth/documentation/time
Here's snippet of code to create a ground overlay in Google Earth API with a URL:
// Create the GroundOverlay
var groundOverlay = ge.createGroundOverlay('');
// Specify the image path and assign it to the GroundOverlay
var icon = ge.createIcon('');
icon.setHref("http://www.google.com/logos/earthday08.gif");
groundOverlay.setIcon(icon);
var timeSpan = ge.createTimeSpan('');
timeSpan.getBegin().set('2009-01-01T17:00:00Z');
timeSpan.getEnd().set('2009-01-01T18:00:00Z');
groundOverlay.setTimePrimitive(timeSpan)
// Specify the geographic location
var latLonBox = ge.createLatLonBox('');
latLonBox.setBox(48.80, 48.75, -121.77, -121.85, 0);
groundOverlay.setLatLonBox(latLonBox);
// Add the GroundOverlay to Earth
ge.getFeatures().appendChild(groundOverlay);
If you're adding the GroundOverlay via a NetworkLink then the URL of the NetworkLink must be to the KML which includes the GroundOverlay and the associated URL to overlay image.
See https://developers.google.com/earth/documentation/kml#kmlnetworklink
var link = ge.createLink('');
var href = 'http://code.google.com/'
+ 'apis/earth/documentation/samples/kml_example.kml'
link.setHref(href);
var networkLink = ge.createNetworkLink('');
networkLink.set(link, true, true); // Sets the link, refreshVisibility, and flyToView
ge.getFeatures().appendChild(networkLink);