**Hello, **
**I’ve gone ahead and taken entities from multiple data sources and placed them inside of a CompositeEntityCollection. The code below reflects what I’ve done. **
var viewer = new Cesium.Viewer(‘cesiumContainer’, {
shouldAnimate : true
});
var entity1 = new Cesium.Entity({
position : Cesium.Cartesian3.fromDegrees(-70.59777, 40.03883),
billboard :{
image : '…/images/Cesium_Logo_overlay.png’
}
});
var entity2 = new Cesium.Entity({
position : Cesium.Cartesian3.fromDegrees(-50.59777, 32.03883),
billboard :{
image : '…/images/Cesium_Logo_overlay.png’
}
});
var entity1Id = entity1.id;
var entity2Id = entity2.id;
Sandcastle.addDefaultToolbarButton(‘Satellites’, async function() {
// Creating Data source
var dataSource1 = await Cesium.CzmlDataSource.load(’…/…/…/…/Apps/SampleData/simple.czml’);
var dataSource2 = new Cesium.CustomDataSource(“d1”);
var dataSource3 = new Cesium.CustomDataSource(“d2”);