[vtkusers] imagedata appearing upside down (sometimes..?)

[Howard Katz]

Hi,
so has anyone run into the problem where their vtkImageData looks upside 
down only sometiems depending on the input values..?  i.e. I know I am 
inputting values 10, 20, 15 (for example) but these appear at rows -10, -20, 
-15  (..and this will happen for the entire image data)

Can anyoen guess what my problem might be?
Thanks..

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