[vtkusers] vtk GetTuple

[cc cc]

Hello all,

I have got a question about GetTuple() function, warnings always come out
at the command window like this:
"Generic Warning: In /home/cc/Program/VTK/VTK/Filtering/vtkFieldData.cxx,
line 920
vtkFieldData::GetTuple was deprecated for VTK 5.2 and will be removed in a
future version."
How can I get rid of it? Or what other function can I use to replace
GetTuple()?
"VTK_LEGACY_SILENT:BOOL=ON" in CMakeCache.txt doesn't work.
I am new to VTK, say hello to all ^ ^.

Cheng
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