Thank you Shawn and Cory very much for your fast replies and suggestions!
The option Append Attributes just as Resample to Image are grayed out when I select the two datasets on the same mesh simultaneously in the pipeline.
Also, when trying Shawn’s suggestion to resample e.g. the second dataset with the first one I get error messages (listed below).
My first dataset is a Multi-Block Dataset (because our plasma code divides the domain which I cannot avoid) which I grouped together (maybe appending already at this stage is the way to go?) and after computing some auxiliary quantities like vector components in curvilinear coordinates and applying the final Point Volume Interpolator, I get a Multi-Block Dataset with two Images (Uniform Rectangular Grid).
For the second dataset (analytical data) I also used the Point Volume Interpolator (it’s of course not multi-block) but a single Image (Uniform Rectilinear Grid) with the same X,Y,Z extents and bounds but only half the Number of Cells and half the Number of Points (which is maybe due to the multi-block structure of the first dataset, so probably counted twice here…)
However, as I said appending or resampling to image is not available when these two instances are selected in the pipeline together. The only available option is the filter “group datasets” that does not bring all arrays onto the same mesh as I need for calculating relative errors of our numerical method.
Thank you,
Paul
Error messages from Resample with Dataset:
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: expecting a variable name; see position 7
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: expecting a variable name; see position 7
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
Error messages from resample to image:
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: expecting a variable name; see position 7
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: expecting a variable name; see position 7
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/Misc/vtkFunctionParser.cxx, line 1244
vtkFunctionParser (0x561597d32880): Syntax error: operator expected; see position 3
Warning: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Filters/Core/vtkArrayCalculator.cxx, line 405
vtkPVArrayCalculator (0x561562f0fc00): An error occurred when parsing the calculator’s function. See previous errors.
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0
ERROR: In /builddir/build/BUILD/ParaView-v5.4.1/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784
vtkPVCompositeDataPipeline (0x561597e95dd0): Algorithm vtkResampleWithDataSet(0x7f6c60033500) returned failure for request: vtkInformation (0x561595382f50)
Debug: Off
Modified Time: 86506784
Reference Count: 1
Registered Events: (none)
Request: REQUEST_DATA_OBJECT
FROM_OUTPUT_PORT: 0
ALGORITHM_AFTER_FORWARD: 1
FORWARD_DIRECTION: 0