Xunlei, Are you expecting to see the extents setup correctly before hitting the Apply button the first time? That indeed won't be the case. You'll have to hit apply and let the actual data-reading happen before the information will be shown on the "information tab".
Utkarsh On Sat, Feb 5, 2011 at 5:46 PM, Xunlei Wu <xun...@renci.org> wrote: > Hi David and All, > > I still have trouble seeing any updates in ParaView (ParaView Git built from > source with VS2008 and Qt 4.6.3 on Windows 7 64bit) after loading a GRIB2 > file. For simiplicity, I have created a skeleton version of my GRIB2 reader. > I have only implemented RequestInformation() with some fabricated > WHOLE_EXTENT() data. I have successfully built such reader as a plugin .dll > (Windows) and loaded it into ParaView through Tool -> Manage Plugins. After > you load a grib2 file also attached, RequestInformation() is called and > WHOLE_EXTENT() has been updated. However, I do not see such change in "Object > Inspector" -> "Information" panel. > I am not sure what I did wrong. And is there anything special I need to do > when build ParaView from source? FYI, "BUILD_SHARED_LIB" is on. > Would you please help me? Thank you very much. > > Best, > x > > -----Original Message----- > From: Xunlei Wu > Sent: Friday, January 21, 2011 12:10 PM > To: David Doria > Cc: paraview@paraview.org > Subject: RE: Write a reader plugin > > Hi All, > Do you have any suggestions? Thanks a lot. > Best, > xunlei > > -----Original Message----- > From: Xunlei Wu > Sent: Saturday, January 15, 2011 5:44 PM > To: 'David Doria' > Cc: 'paraview@paraview.org' > Subject: Write a reader plugin > > Hi David and all, > I am writing a reader plugin for ParaView. A test program without the VTK > wrapping approves that I can get all the header (metadata) and grid data > correctly. However, when I following the examples posted in > http://www.vtk.org/Wiki/ParaView/Examples/Plugins/Reader > http://www.kitware.com/products/html/WritingAParaViewReaderPlug-in.html > and vtkStructuredGridReader.h/.cxx > > I got confused. Shall I subclass vtkStructuredGridAlgorithm or > vtkStructuredGridReader? What are the differences? With minor differences in > the code, i.e. defining char* FileName, I have both scenarios built fine. > > Let's say, we are subclassing vtkStructuredGridAlgorithm for now on. After I > populate values as the following > > int vtkGRIB2Reader::RequestInformation(vtkInformation* vtkNotUsed(request), > > vtkInformationVector** vtkNotUsed(inputVector), > vtkInformationVector *outputVector) > { > ... > vtkInformation* outInfo = outputVector->GetInformationObject(0); > > outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), ext, > 6); > outInfo->Set(vtkDataObject::SPACING(), this->Spacing, 3); > outInfo->Set(vtkDataObject::ORIGIN(), this->Origin, 3); > > return 1; > } > > In ParaView Object Inspector / Information widget, I did not see any update > in all the fields except Statistics / Type: Structured (Curvilinear) Grid. > Would you please help me? Did I populate outInof in the wrong place? Thanks a > lot. > > Best, > xunlei > > > _______________________________________________ > 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
