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

[Mathieu Malaterre]

Howard Katz wrote:
> 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?

You spacing can be negative, this happens typically in medical image 
data such a MINC or DICOM

HTH
Mathieu