[vtkusers] existing filter to perform replace value on vtkImage

[Dominik Szczerba]

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I wouldn't know on having a look. Try different name for the result
array. Make sure the expression is valid. Make sure the datatypes are
compatible and you use point/cell data properly. At the end try changing
your locale - on my system the calculator works in one locale but not
another.

David Doria wrote:
> On Tue, Feb 16, 2010 at 3:03 PM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
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>> vtkArrayCalculator
> 
> I tried to make a demo of this, but it doesn't seem to work as I'm expecting.
> 
> http://www.vtk.org/Wiki/VTK/Examples/ArrayCalculator
> 
> I would expect the output to be
> 0
> 0
> 1
> or something about like that (depending on the value of sign(0)).
> 
> Instead the output doesn't seem to be any different from the input
> (still 1, 2, 3).
> 
> Dominik, would you mind taking a look and fixing this small example?
> 
> Thanks,
> 
> David
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