[vtkusers] Can I map a scalar field to opacity field?

[David.Pont at ForestResearch.co.nz]

Hi Tahwwhat,
   Default behaviour would have your glyphs coloured according to your
scalar field using the default lookup table. If you create your own
(vtkLookupTable) you can specify a range of opacity (SetAlphaRange) along
with the colour range. Note you can also specify RGBA for individual table
entries with SetTableValue if a linear opacity ramp is not what you want.
  Dave P

s comp <sscomp2004 at yahoo.com.au> wrote on 06/09/2004 18:09:51:

> What I want to do (initialy at least) is control the opacity of a
> set of 3d glyphs. At the moment they are all represented by the same
> actor, so as far as I know I can only set  the opacity of all of
> them to the same value, but I would like to control them
> individually by means of a scalar field.
>
> Any help would be greatly appreciated.
>
> Thanks,
>
> Tahwwhat
>
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