[Paraview] Error when comparing multiple datasets

[linzhenhua]

Hi

I want to compare the difference from the data from two dataset with the same grid topology. I load in two dataset separately, then apply the PythonCalculator filter, but immediately encounter the following error. What is the problem? The version is 4.1 for 32bit linux OS.

ERROR: In /home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx, line 815
vtkPVCompositeDataPipeline (0xb4711d0): Input for connection index 0 on input port index 0 for algorithm vtkPythonCalculator(0xb4aa0b0) is of type vtkMultiBlockDataSet, but a vtkDataSet is required.


ERROR: In /home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx, line 815
vtkPVCompositeDataPipeline (0xb4711d0): Input for connection index 1 on input port index 0 for algorithm vtkPythonCalculator(0xb4aa0b0) is of type vtkMultiBlockDataSet, but a vtkDataSet is required.


ERROR: In /home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx, line 815
vtkPVCompositeDataPipeline (0xb4711d0): Input for connection index 0 on input port index 0 for algorithm vtkPythonCalculator(0xb4aa0b0) is of type vtkMultiBlockDataSet, but a vtkDataSet is required.


ERROR: In /home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Common/ExecutionModel/vtkDemandDrivenPipeline.cxx, line 815
vtkPVCompositeDataPipeline (0xb4711d0): Input for connection index 1 on input port index 0 for algorithm vtkPythonCalculator(0xb4aa0b0) is of type vtkMultiBlockDataSet, but a vtkDataSet is required.







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