Selection by QUERY extraction fails at providing a vtkSignedChar array
(gdb) print insidedness $13 = (vtkSignedCharArray *) 0x0 (gdb) print extracted->GetCellData()->GetAbstractArray("vtkInsidedness")->GetClassName() $14 = 0x7fffe0c484d3 "vtkCharArray"
It is due to numpy_selection.py converting the same numpy type to both array type.
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