[vtkusers] No Effect for vtkLookupTable on Triangulated PolyDataMapper

[Malcolm Drummond]

Hi Kevin

I think there are no scalars in your dataset to map colors to. Try using
vtkElevationFilter.

HTH
Malcolm

----- Original Message -----
From: "Kevin Tiow Wee Tan" <twtan at cheerful.com>
To: <vtkusers at public.kitware.com>
Sent: Wednesday, May 21, 2003 4:54 PM
Subject: [vtkusers] No Effect for vtkLookupTable on Triangulated
PolyDataMapper


> Hi,
> How are you?
>
> I have digitised a series of points, and used vtkDelaunay2D to
> triangulate those points.  This vtkDelaunay2D class works perfectly in
> terms of triangulation.
>
> Now I would like to attach colour mapping onto the polygon from a
> vtkLookupTable, where used the range of values in Z position as the
> correspondence range of colour (red-green-blue).
>
> I did the normal create a lookup table, and set the table within the
> mapper.  But the whole triangulated object still display one single grey
> colour.  I can use vtkActor.GetProperty().SetColor to set the colour for
> whole object.
>
> Any idea that I can represent the height profile on my triangulated
> PolyDataMapper?
>
> Any advise would be much appreciated...
>
> --
> Thanks
> Kevin
> **********************************
> Manchester Material Science Centre
> University of Manchester
> ----------------------------------
> Centre for Virtual Environments
> University of Salford
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