[vtkusers] vtkScalarBarActor and log color maps

Will Schroeder will.schroeder at kitware.com
Tue Feb 4 15:21:03 EST 2003


The current CVS version of VTK supports vtkLogLookupTable and 
vtkScalarBarActor, treating the log lookup table correctly. Look at the 
example Graphics/Testing/Tcl/HyperScalarBar.tcl
Will

At 02:07 PM 2/4/2003 -0600, Edward Bachta wrote:

>I have a color bar associated with a log color map, and with a standard
>blue to red scheme the bar is almost completely red with a little blue and
>green occupying ~%1 of the low end. The labels progress linearly over the
>range. I would have expected the labels to progress logorithmically over
>the range so that I can clearly see the colors in the map. Can I get this
>effect without having to write my own lookup table/scalar bar?
>
>--
>Ed Bachta
>
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