[vtkusers] Incorrect coloring landscape by elevation ?

David Doria daviddoria at gmail.com
Fri Aug 19 11:34:09 EDT 2011

On Fri, Aug 19, 2011 at 11:30 AM, Artem Babayan
<artem.paraview at googlemail.com> wrote:
> Hello,
> I and drawing the 3D 'landscape' graph using the data defined on 2D
> structured grid and I would like to color the resulting graphics
> according to elevation. The pipeline looks like this:
> vtkImageData->vtkImageDataGeometryFilter->vtkWarpScalar->vtkDataSetMapper
> The mapper has a color lookup table. The result (picture attached)
> does not shows the color based on elevation, that is points with the
> same z-coordinates have different colors. Why? It looks like points in
> TRIANGLES which form the surface were colored correctly, by within
> each triangle the color is just interpolated. Is it a correct
> behaviour or am I doing something wrong?
> Best wishes
> Artem

Are you trying to color the triangles? or the points? If you color the
points, the colors inside the triangles will indeed be interpolated.

Have you seen these examples?



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