I suspect that the volume mapper has some settings that are specified in physical units.<br><br><br>On Friday, October 14, 2011, Sean Larkin <<a href="mailto:sean.larkin@lickenbrocktech.com">sean.larkin@lickenbrocktech.com</a>> wrote:<br>
> Hello,<br>><br>> I’m using vtkImageReader to loading a 3D volume and render it with vtkVolumeMapper. I want to be able to adjust the voxel aspect ratio, so I decided to use the SetDataSpacing() method of vtkImageReader. Is this the best way to do this? I ask this because I can get very different looking rendered images when I use the same aspect ratio, with different values. For example, when I set the spacing to [.043,.043,1] I get poor resolution compared to when I use [1,1,23.3] (these are the same ratios). Does anyone know why this is happening?<br>
><br>> <br>><br>> Thanks,<br>><br>> Sean Larkin