Cell volume in Paraview
 

All,
I'm trying to get the cell volume into the calculator filter in Paraview, but am having inconsistent results. I am using the Mesh Quality filter with tet quality measure set to volume, which supposedly will calculate the cell volume. Then I apply the Calculator filter to this output. Unfortunately, I can't seem to find the Volume variable in my list of scalars in the Calculator filter, but if I apply the Integrate Variables filter I see the correct total domain volume. Am I missing a step to get access to this Volume variable in the calculator filter? Thanks.