[vtkusers] Newbie surface using RectilinearGrid question

[Frederick Isaac]

Hi,
Any help is appreciated.
I am trying to produce a simple 3-D plot of the function z = x^2 + y^2 over (-1.0, -1.0), (1.0, 1.0). I created a vtkRectilinearGrid to represent the basis (x,y) over the region and the set the scalar values to the function values for the region.

I want to then create a simple 3-d plot of the surface (wireframe). Why am  I doing this? to learn vtk programming techniques and wanted to start with a simple and common application.

I can get using vtkPolyDataMapper and then vtkActor a colored plane that I suppose that the colors represent the z value of the scalars. I of course wanted a nice quadratic wireframe mesh of the surface values.

any suggestions?

also help with axes and bounding boxes would be appreciated.

Thanks in advance

Cheers