[vtkusers] Newbie Question: How to get a grid overlay on a surface plot

[Raymond Chan]

Hi there,
I'm try to plot a simple function such as z=f(x,y) in vtk + python +
numeric. The values of x and y are obtained from a simple NxM matrix.
Managed to get a surface plot of the function based on the expCos.py
example.

Bu I would like to be able to actually see my orginal data points as a
grid on the surface.

The current solution I have in mind is to individually draw each line
of the grid. But its a bit of an overkill. Any more elegant methods
out there?
-- 
Regards,
Raymond Chan