When I save a 3D image into pnm using in VTK 4.0 vtkPNMWriter with SetFileDimensionality(3) I only get the first slice (filename.000) Is there a way to save a 3D image as a set of pnm files? Besides, could one of the kitware guy answer my previous question: Why did you remove RenderWindow::SaveImageAsPPM? Thank you so much! Sylvain