[vtkusers] Subcell Refinements

[Truman Ellis]

I am working on a high order finite element code and using VTK to output
my results for plotting with Paraview. Since each cell contains
potentially much more information than a single VTK bilinear cell can
hold (we typically use order polynomials of order 2 or 3, but sometimes
up to 5), I have implemented  subcell sampling to output each cell as
multiple cells to VTK. The problem with this approach is that it is
pretty important to us to view the actual grid used, but this tricks VTK
and Paraview into thinking we are using a finer grid. I would like to be
able to output the real coarse grid that we are using and overlay this
on top of the surface plots that we are getting from the subcell
sampling strategy.

So, first of all, does anyone know how this could be done? I am also
open to other alternatives to my subcell sampling approach, since I
could see this getting complicated with triangles and eventually moving
into 3D.

-- 
Truman Ellis

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