[Paraview] Does vtkFixedPointVolumeRayCastMapper Work with Unsigned Char?

[Kent Eschenberg]

Thanks, that is very helpful!

I tried both the raw data and the VTK reader. I am sure I got the bounds correct since, after passing the data through the Calculator, the display was correct. Calculator merely changed the values from char to double.

I'm using ParaView from CVS on 6/25; which version are you using?

Kent

Patrick Shinpaugh wrote:
> Yes, loaded a raw dataset (1024x943x50) of unsigned char. Visualized 
> using volume (not sure which volume class I was using - whatever the 
> default is). I did by mistake initially set the bounds 0-1024,0-943,0-50 
> which appeared to have the issue you mentioned (although it could have 
> been that it appeared to have the minimum) until I realized that the 
> bounds were incorrect.
> 
> 
> 
> Kent Eschenberg wrote:
>> Has anyone been able to use the ParaView volume visualization with 
>> char or unsigned char data? In my test it seems to replace all data 
>> values with the max. Using Calculator to first convert to double works.