[Paraview] Calculator in PV, How can I access coordinate location in the function?

[Dan Goldstein]

HI All,
   Does anyone know how to access the location (x,y,z) of a point in a 
function using the calculator tool?
ie:

new_vector = TEMPERATURE - Z

Thanks

Dan

-- 
Dan Goldstein
Research Scientist
NorthWest Research Associates, Inc.
Colorado Research Associates Division
Colorado, U.S.A.
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