[Paraview] calculator, min

[Sid Sydoriak]

It seems the calculator can accept a function for the second argument of 
min or max but not for the first.

For example, on Source->Wavelet, min(2,3) yields 2 on the field, and 
min(2,sqrt(9)) also yields 2. But min(sqrt(4),3) results in an error:

 vtkFunctionParser (0x6b8bcf0): Syntax error: expecting a variable name; 
see position 11
There was a VTK Error in file: 
/home/sxs/paraview/paraview-2.6.1/ParaView-2.6.1/VTK/Common/vtkFunctionParser.cxx 
(1388)

    Sid