Implementing 3D Line Chart over time

Hi,

I began WPF 3D programming and I wanted to implement a Line chart which will be updated over time i.e. a kind of waterfall chart in 3D which displayes e.g. spectrums. I had two approaches for this implementation.
First: every spectrum is created as Visual3D with its own Material and GeometryModel3D
Sec: every spectrum is in one big Visual3D

What is the best approach to achieve the solution or is there any better way to do this? Performance is citical as well because it should be filled with live data.

Thanks

For Visual3D vs. Model3D: have a look at http://blogs.msdn.com/b/danlehen/archive/2005/10/09/478923.aspx
The AudioDemo example in this library shows frequency spectra visualized by scaling boxes in one direction.

Thanks for the information. I will check this out and will decide which solution is the best.