[vtkusers] please help me with vtkMarchingCubes or vtkContouFilter

[Piotr Mista]

Hi, I'm Piotr.
I'm trying to use methods GetNumberOfContours() and GetValue(), but there are no examples how to use it. When I use these methods I alvais obtain 0 or 1. Can somebody show me an example, how to properly use it. 
Can somebody also explain me what's up with methods SetValue() or GenerateValues(). When I have several contours on the image, how do I know what values put as a parameters to these methods.
                                                                                                                                                                   Thanks, Piotr.
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