[vtkusers] Contouring through constant value areas of dataset

[David E DeMarle]

Umm, because the values are constant? Which means they contain only
one value, and thus either nowhere contain the value that a contour
displays, or everywhere contain it.

I am not sure I understand your question otherwise.


On Fri, Sep 5, 2008 at 4:17 PM, Gerrick Bivins
<gbivins at objectreservoir.com> wrote:
>
> Hi All,
> When generating contour values (isosurfaces) with vtkContourFilter, I've
> noticed that areas in the dataset with constant values ( probably not the
> correct terminology here) don't produce contours.
>
> For example, here is the original multiblock dataset in Paraview with areas
> of constant value:
> http://www.nabble.com/file/p19338704/constantValues-surface.png
>
> Here is the contouring with about 100 values:
> http://www.nabble.com/file/p19338704/constantValues-100-contours.png
>
> Here is the contouring with ALOT of values:
> http://www.nabble.com/file/p19338704/constantValues-many-contours.png
>
> Can someone explain why the square area(bottom left of the elliptical
> dataset) and triangle area (bottom right) don't produce any contours? The
> only similarities are that the values in those areas are constant in those
> areas.
> Gerrick
>
>
> --
> View this message in context: http://www.nabble.com/Contouring-through-constant-value-areas-of-dataset-tp19338704p19338704.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
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