Looks to me like a bug/feature of the VTK pipeline. Apparently it expects whole extents to be the same for all input structured data sets.
See how just before vtkExecutive runs the algorithm's Request*() methods in vtkExecutive::CallAlgorithm() it calls CopyDefaultInformation(). In vtkStreamingDemandDrivenPipeline::CopyDefaultInformation() copies the first input's whole extent to all outputs. You might get around this by making your own executive with it's own CopyDefaultInformation(). The actual error comes later at the start of the RequestUpdateExtent() pass when vtkStreamingDemandDrivenPipeline::VerifyOutputInformation() happens. David E DeMarle Kitware, Inc. R&D Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Sat, Nov 12, 2011 at 5:17 AM, Fred Fred <stan1...@hotmail.fr> wrote: > I really do not understand how PV/VTK works! > I get this error: > ERROR: In > /usr/local/ParaView-3.10.1/VTK/Filtering/vtkStreamingDemandDrivenPipeline.cxx, > line 882 > vtkPVPostFilterExecutive (0x12a1c6b00): The update extent specified in the > information for output port 0 on algorithm vtkPVPostFilter(0x12a1c60c0) is 0 > 24 0 34 0 232, which is outside the whole extent 0 96 0 20 0 63. > but if I print the values at the end of RequestData() I get different > values: > int uExtent[6]; > > this->GetExecutive()->GetOutputInformation(0)->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), > uExtent); > printf("Extent: %d", uExtent[0]); > for (int i=1 ; i<5 ; i++) printf(" %d", uExtent[i]); > printf(" %d\n", uExtent[5]); > > this->GetExecutive()->GetOutputInformation(0)->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), > uExtent); > printf("Update: %d", uExtent[0]); > for (int i=1 ; i<5 ; i++) printf(" %d", uExtent[i]); > printf(" %d\n", uExtent[5]); > prints: > Extent: 0 24 0 34 0 232 > Update: 0 24 0 34 0 232 > Please help! > ________________________________ > From: stan1...@hotmail.fr > To: paraview@paraview.org > Date: Fri, 11 Nov 2011 12:08:24 +0100 > Subject: [Paraview] Whole extend issue > > Hello, > I have a filter inherited from vtkUnstructuredGridAlgorithm, with 2 inputs > of type vtkStructuredGrid and 3 outputs, 1 and 2 are just copies of the > input and the third one is of type vtkUnstructuredGrid. > I copy input0 to output0 like this: > vtkInformation *in0Info = inputVector[0]->GetInformationObject(0); > vtkStructuredGrid *in0 = > vtkStructuredGrid::SafeDownCast(coarseInfo->Get(vtkDataObject::DATA_OBJECT())); > this->GetExecutive()->GetOutputData(0)->ShallowCopy(in0); > vtkInformation *in1Info = inputVector[1]->GetInformationObject(0); > vtkStructuredGrid *in1 = > vtkStructuredGrid::SafeDownCast(coarseInfo->Get(vtkDataObject::DATA_OBJECT())); > this->GetExecutive()->GetOutputData(1)->ShallowCopy(in1); > but I get this error: > ERROR: In > /usr/local/ParaView-3.10.1/VTK/Filtering/vtkStreamingDemandDrivenPipeline.cxx, > line 882 > vtkPVPostFilterExecutive (0x12c3e58d0): The update extent specified in the > information for output port 0 on algorithm vtkPVPostFilter(0x12c3e4e90) is 0 > 24 0 34 0 232, which is outside the whole extent 0 96 0 20 0 63. > Actually 0 24 0 34 0 232 are the dimensions of input0 and 0 96 0 20 0 63 are > the dimensions of input1. > So I do not understand why extends of input1 are considered as the "whole > extend" (BTW what is the "whole extend"? whole extend of the multblock > dataset?) > > _______________________________________________ Powered by www.kitware.com > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html Please keep messages > on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview