[vtkusers] Fwd: Re:AW: vtkContourFilternotworkingonvtkStructuredGrid

[David E DeMarle]

You can not contour cell centered values. Isocontouring finds the planes
within each cell that lie on the chosen isovalues. With cell centered
values, the nearest equivalent operation is threshold, which picks out the
cells that have the chosen isovalues.

You can apply the cell to points filter to interpolate cell centered values
onto the points, then the contour will have something to work with inside
each cell.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109


On Fri, Mar 12, 2010 at 7:34 AM, Sebastian Gatzka <
sebastian.gatzka at stud.tu-darmstadt.de> wrote:

>  It's finite-volume-calculation<http://en.wikipedia.org/wiki/Finite_volume_method>scalar data, which is - as a matter of fact - stored at the cell centers.
> Maybe I have to interpolate to the points if contour filter doesn't work on
> cell data?!
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20100312/46a55961/attachment.htm>