[vtkusers] how to calculate the extent of an image?

[fred]

Emmanouil Moschidis a écrit :
> Hello maybe it is a simple question but how can we calculate the 
> extent of a vtkImageData? For example one 512x512 two dimensional 
> image has extent
> (0,512,0,512,0,1) ? Is it correct? In many cases i see that extent[4] 
> is  1... 
I personnaly use (0, nx, 0, ny, 0, 1)
and that works perfectly.


Cheers,

-- 
http://scipy.org/FredericPetit