Can you post you reader's code? It might make things easier. Utkarsh
On Fri, Jul 6, 2012 at 12:15 PM, Joshua Murphy <[email protected]> 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 trouble… > > > > 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
