[Paraview] accessing vtkFieldData from calculator filter

[Christine Corbett Moran]

Hi,

I'm adding meta data to my vtkPolyData via vtkFieldData per
http://www.itk.org/Wiki/VTK/Examples/Cxx/PolyData/FieldData. I see
this metadata fine from the ParaView GUI but can't seem to do anything
with the information without manually copying and pasting.
Specifically I'd like to use some of the field values in a calculation
via e.g. the calculator filter. Any way to do something like this?

Cheers,
Christine