Calculate volume of tetrahedral mesh regions

ParaView Support
2

You can do this with the Programmable Filter and a fairly short script. Assume the name of your scalars that label the regions is called ‘RegionId’, then your script would look like:

# Find unique region IDs
regionArray = inputs[0].CellData['RegionId']
regions = unique(regionArray)

v = volume(inputs[0])
for regionValue in regions:
  regionVolume = sum(v[regionArray == regionValue])
  print(regionValue, regionVolume)

This will print the volume of each region value and region.

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