[vtkusers] simple contouring

[vtk at scil.sinp.msu.ru]

Hi!

Maybe, I'm super stupid, but can anybody give me an exaple of how to 
contour data?
Very simple case, array (3d or 2d) with points and value in each point.
Example without reading data from file, or using any functions inside 
toolkit ("quadric" or so) etc. Very simple example. Example of how to 
construct data for that and how to use vtkContourFilter for the data 
constructed.

Thanx!