[vtkusers] volume data

[Ross Eldridge]

Hey Vlad,

Instead of using cuts and isosurfaces, have you tried using a volume 
renderer on your data?

If you really want to use glyphs, you'll want to adjust your 
vtkPolyDataMapper to do what you want.  To do that, set your mapper's 
lookup table to a new vtkLookupTable you create, and set whatever color 
ranges and alpha range (opacity) you want (don't forget to set your 
lookup tables scalar range using SetRange).  Of course, this is limited 
to a linear change in opacities, but hopefully it's what you're looking for.

-Ross


Vlad - Andrei Lazar wrote:
> Hello,
>
> I am trying to visuzlize 3D volume data. As it is rather hard to see 
> anything using cuts or isosrufaces, I have to come up with a new way.
>
> My idea was to place a glyph at each data point and make the opacity 
> of the glyph proportional to the value in that voxel. So far I did not 
> manage to do such a thing (the documentation is not all that great I 
> have to say...).
>
> Is there an easy way to do such thing?
>
> Best regards,
> Vlad
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