[vtkusers] Problem mapping scalars to colors using a vtkLookupTable

[David.Pont at ensisjv.com]

"Peter Kok" <peter.kok at gmail.com> wrote on 01/07/2007 23:00:47:

> Hello Geofram and others,
>
> I finally found an embarrassingly simple solution to set a
> vtkColorTransferFunction in a vtkImagePlaneWidget. It is as simple
> as setting the transfer function in the image plane's color map
> using ipw.GetColorMap().SetLookupTable(ctf) instead of ipw.
> SetLookupTable(...).
>
> Now, if only a vtkColorTransferFunction would allow you to specify
> an opacity for each scalar... Are there any classes that do such things?

Peter,
   can you use a vtkLookupTable (which has alpha) instead of a
vtkColorTransferFunction?
  regards, Dave P

>
> Regards,
> Peter
> _______________________________________________
> This is the private VTK discussion list.
> Please keep messages on-topic. Check the FAQ at: http://www.vtk.
> org/Wiki/VTK_FAQ
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20070703/3edfb117/attachment.htm>