[vtkusers] Contouring through constant value areas of dataset

[Gerrick Bivins]

Right. But for instance, if I were visualizing this data via volume
rendering, the areas with this constant value would be displayed rather than
not. 
Am I misunderstanding the intent of contouring? If so, is there another
filter I can use to accomplish what I'm describing?
Gerrick


On 9/5/08 3:29 PM, "David E DeMarle" <dave.demarle at kitware.com> wrote:

> 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-tp19
>> 338704p19338704.html
>> Sent from the VTK - Users mailing list archive at Nabble.com.
>> 
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