[vtkusers] vtkImageIterator

[P B]

Hi,
 
   could anyone tell me what's wrong in the usage of iterator in the following code? I've been trying to use image iterators but am not sure if I have implementation problems or if the problem is elsewhere, with the creation of a transformed images that I want to output,
 
Thanks!!
Pascale
 
in the following code, Image is a vtkImageData * :
 
vtkImageIterator<unsigned short> *it = new vtkImageIterator<unsigned short>(Image, ext);
unsigned short* Begin;
while (!it->IsAtEnd())
{
      unsigned short* End = it->EndSpan();
      for( Begin = it->BeginSpan(); Begin != End; Begin++)
      {
            val = (unsigned short)(*Begin);
            val; 
      }
      it->NextSpan();
      Count++;
}
 
 
 
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