[vtkusers] SetScalar() removes my color scalars

[jhirsch]

Hello Doug,
your source example just creates two arrays and set their names and
therefore has little to do with your problem, I guess. Can you copy more
lines of code that show the problem with the scalar replacement?

In general I would recommend to create a scalar array with 3 components and
use that for colours. Like this:

(that's from the example  here
<http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/ColoredPoints>  )




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