[vtkusers] vtkColorTransferFunction and vtkDataArray

[Jean M. Favre]

Matthieu.Chabanas at imag.fr wrote:
> 
> Hello,
> 
> I would like to map scalars to colors using a non-continuous linear function,
> let's say :
> yellow if x is in [min, a]
> orange if x is in [a,b]
> red if x is in [b,max]
> 

> There is the SetLookupTable method, but it can only be used with a
> vtkLookupTable, not a vtkColorTransferFunction.
> Is it possible to build a vtkLookupTable that has the same behaviour as a
> vtkColorTransferFunction?

I tried it and it worked for me. Here is the Tcl script.

-- 
Dr. Jean M. Favre,                            email:favre at cscs.ch
http://www.cscs.ch/people/Favre.html
CSCS, Swiss Center for Scientific Computing | Tel:  +41 (91) 610.82.40
Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82
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