Oops. Sorry. I'll look again. JB
-----Original Message----- From: Joshua Murphy [mailto:joshua.mur...@lasp.colorado.edu] Sent: 06 July 2012 21:13 To: Biddiscombe, John A.; Utkarsh Ayachit Cc: paraview@paraview.org Subject: Re: [Paraview] Question on Multiple Ports in Custom Reader (repost from developer list) I think the example you gave me was for input ports, not output ports... it generates the following paraview error: ERROR: In /Users/jjm390/Development/paraview/ParaView-3.14.1-Source/VTK/Filtering/vtk DemandDrivenPipeline.cxx, line 689 vtkPVCompositeDataPipeline (0x7fbfdec84150): Algorithm vtkGenericReader(0x7fbfdec5e4a0) did not create output for port 0 when asked by REQUEST_DATA_OBJECT and does not specify any DATA_TYPE_NAME. -Josh On 7/6/12 12:26 PM, "Biddiscombe, John A." <biddi...@cscs.ch> wrote: >You've used > switch(port) > { > case 0: > info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkStructuredGrid"); > break; > > case 1: > info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTable"); > break; > } > >But I always use > if (port==0) { > info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPointSet"); > } > else if (port==1) { > info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPointSet"); > } > >Does that fix it? > > >-----Original Message----- >From: paraview-boun...@paraview.org >[mailto:paraview-boun...@paraview.org] On Behalf Of Joshua Murphy >Sent: 06 July 2012 18:53 >To: Utkarsh Ayachit >Cc: paraview@paraview.org >Subject: Re: [Paraview] Question on Multiple Ports in Custom Reader >(repost from developer list) > >Hi Utkarsh, > >Here is the generic reader I am experimenting withŠ I haven't ported >anything into my actual reader yet, as I am just trying to get the second >port to work before messing with my actual reader. > >Thanks for helping! > >-Josh > > >On 7/6/12 10:46 AM, "Utkarsh Ayachit" <utkarsh.ayac...@kitware.com> wrote: > >>Can you post you reader's code? It might make things easier. >> >>Utkarsh >> >>On Fri, Jul 6, 2012 at 12:15 PM, Joshua Murphy >><joshua.mur...@lasp.colorado.edu> wrote: >>> Hello all, >>> >>> I am still struggling with this problem, so I figured I would re-post >>>the question to the general list in hopes of getting a wider >>>audience! >>> >>> Thanks in advance for any help you may provide! >>> >>> For Completeness, I have verified that I am setting the number of >>> output ports in my constructor. >>> >>> Thanks again for any help! >>> >>> -Joshua Murphy >>> >>> Laboratory for Atmospheric and Space Physics >>> >>> University of Colorado, Boulder >>> >>> >>> >>> >>> Hello, >>> >>> >>> >>> I am attempting to write a reader that handles both structured grids >>>and meta-data. It was recommended to me that I use multiple ports, >>>and populate a vtkTable with the meta-data. >>> >>> >>> >>> I think I am having some conceptual problems with how this is >>>supposed to work. >>> >>> >>> >>> I have written a dummy reader in an attempt to get the meta-data >>> working prior to porting it to my real reader, but I am having >>> troubleŠ >>> >>> >>> >>> My understanding is that I need to >>> >>> >>> >>> specify the number of output ports with >>> this->SetNumberOfOutputPorts(2) Populate the output port information >>> >>> int vtkGenericReader::FillOutputPortInformation(int port, >>>vtkInformation* >>> info) >>> >>> { >>> >>> switch(port) >>> >>> { >>> >>> case 0: >>> >>> info->Set(vtkDataObject::DATA_TYPE_NAME(), >>> "vtkStructuredGrid"); >>> >>> break; >>> >>> case 1: >>> >>> info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTable"); >>> >>> break; >>> >>> } >>> >>> return 1; >>> >>> } >>> >>> >>> >>> 3. Get the informationObject from the outputVector >>> >>> outputvector->GetInformationObject(1); >>> >>> >>> >>> 4. Get the table data >>> >>> this->MetaData = dynamic_cast<vtkTable*> >>> >>> (this->MetaDataOutInfo->Get(vtkDataObject::DATA_OBJECT())); >>> >>> >>> >>> 5. Add string to the table >>> >>> >>> >>> vtkStringArray *MetaString = vtkStringArray::New(); >>> >>> MetaString->SetName("Meta Data"); >>> >>> MetaString->SetNumberOfComponents(1); >>> >>> MetaString->InsertNextValue("This is a Test"); >>> >>> MetaString->InsertNextValue("Test 2"); >>> >>> MetaString->InsertNextValue("Test 3"); >>> >>> this->MetaData->AddColumn(MetaString); >>> >>> >>> >>> >>> >>> It is my understanding that this information should then be available >>>in the ParaView GUI. >>> >>> >>> >>> >>> >>> The problems I am having are this: >>> >>> >>> >>> 1. When attempting to get both port information objects on the first >>>call to RequestInformation(), port 1 returns a NULL object. On the >>>SECOND call to GetInformation(), both ports are available. >>> >>> >>> >>> 2. All calls to RequestData() only provide access to port 0 in the >>>Output information Vector. I can access port 1 if I utilize >>> this->getExecutive()->getOutputInformation(1) >>> >>> >>> >>> 3. When using #2 to get the information, I populate, but I am unsure >>> where/how things are supposed to be accessible in the GUI. >>> >>> >>> >>> >>> >>> What I am trying to do is be able to access the meta-data values from >>>within ParaView so that I can utilize data values, units, model run >>>data, etc. >>> >>> >>> >>> If anyone can help me understand what is supposed to be going on, or >>>if I am completely doing something wrong, I would be grateful! Am I >>>missing some steps? Do I need to have XML code to access the >>>vtkTable? >>> >>> >>> >>> >>> >>> Thanks, >>> >>> >>> >>> Joshua Murphy >>> >>> Laboratory for Atmospheric and Space Physics >>> >>> University of Colorado, Boulder >>> >>> >>> >>> >>> _______________________________________________ >>> 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
