I have got customDataSource with few enetities,
Is there any way how change position one of them?
You can change the position of any of the entities by simply setting the position to a new value.
ie entity.position = Cesium.Cartesian3.fromDegrees(newLongitude, newLatitude);
Have you seen this tutorial on visualizing spatial data? http://cesiumjs.org/2015/02/02/Visualizing-Spatial-Data/
There’s a lot of information on how to use the entity API in that tutorial.
I understand how change position of entiy.
But I don't know how can I get a entity from my custom data source?
For example I have got one customDataSource and name of specify entity and I want change position or visibility of entity.
Sorry for misunderstanding your question.
Does that answer your question? If not, could you paste a code sample of how you are adding entities to the custom datasource? That’ll help me better understand what you’re trying to accomplish.