[vtkusers] vtkLookupTable - question?

[xiong fei]

Hi,karin

    Thank you for your advice. I think my question is
that: provided a series of data values and a
lookuptable, how can I manually transfer an individual
number into the corresponding color? I should say that
I don't want to define scalar and polydata objects in
this case, the only thing required is a simple
mapping. So is there any good method? Thanks a lot.

Best Regards
Peter
--- Karin Faulhaber <faulhabe at ipf.uni-karlsruhe.de>
wrote: > Hi Peter,
> 
> I don't know if this is what you want, but did you
> try SetTableValue in
> vtkLookupTable?
> 
> Good luck
> Karin
> 
> 
> 
> xiong fei wrote:
> > 
> > Dear vtkusers
> > 
> >     Sorry for posting this message again, but I am
> > really in trouble now. What I want is to transfer
> a
> > series of special data values into colors, like -1
> for
> > red, 0 for green and 1 for blue(just a color
> mapping).
> > Is there any method provided by VTK to solve this
> > problem? I have tried to use the public method
> > GetColor or GetOpacity in vtkLookupTable or
> > vtkColorTransferFunction, however, it returns an
> error
> > report for invalid usage. So can someone tell me
> > whether I have chosen a wrong way to do it?
> > 
> > Best Regards
> > Peter
> > 
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> -- 
> Karin Faulhaber
> Universitaet Karlsruhe
> Institut fuer Photogrammetrie und Fernerkundung
> (IPF)
> Englerstr. 7 
> 76128 Karlsruhe
> 
> Tel: 0721/608-3676
> E-Mail: faulhaber at ipf.uni-karlsruhe.de


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