We have not received additional information to ascertain what the exact feature is, and I am closing this item because 3D plotting is not in our plans at the moment. Nevertheless, you can always comment or vote for a feature, or add a new one with more details, so we can gauge its feasibility, and community traction.

Could you provide some more details on what you would like to see? The examples I can see online are for a 3d plotting through 3 dimensional axes and this is not a feature we have in our charting engine, and I do not think it will be added in the foreseeable future.