[vtkusers] Error using vtkXMLMultiBlockDataWriter

Utkarsh Ayachit utkarsh.ayachit at kitware.com
Fri Jun 4 13:46:44 EDT 2010 

You can apply the attached patch and then post the generated output?

Thanks
Utkarsh

On Thu, Jun 3, 2010 at 3:36 PM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
> Same issue here, vtk 5.6, linux.
> Dominik
>
> On Thu, Jun 3, 2010 at 3:32 PM, Adriano Gagliardi <agagliardi at ara.co.uk>
> wrote:
>>
>> Unfortunately, it's in serial. I tried it out with a simple piece of code
>> (mostly taken from the VTK Examples page) and the same thing happened. The
>> version of VTK was the one supplied in the ParaView-3.8.0-RC2, but I'll
>> try
>> with the official release to see if there is any difference. If anyone
>> else
>> has this working, I'd be interested in seeing an example.
>>
>> =========================================================================
>> mbwritertest.cxx:
>> =========================================================================
>> #include <sstream>
>>
>> #include <vtkSphereSource.h>
>> #include <vtkPolyData.h>
>> #include <vtkMultiBlockDataSet.h>
>> #include <vtkXMLPolyDataWriter.h>
>> #include <vtkXMLMultiBlockDataWriter.h>
>> #include <vtkSmartPointer.h>
>>
>> int main(int, char *[])
>> {
>>  vtkSmartPointer<vtkMultiBlockDataSet> MBPolyData =
>>    vtkSmartPointer<vtkMultiBlockDataSet>::New();
>>  MBPolyData->SetNumberOfBlocks(4);
>>
>>  for ( vtkIdType currBlk = 0; currBlk != MBPolyData->GetNumberOfBlocks();
>> ++currBlk ) {
>>
>>    //Create a sphere.
>>    vtkSmartPointer<vtkSphereSource> sphereSource =
>>      vtkSmartPointer<vtkSphereSource>::New();
>>    sphereSource->SetCenter(currBlk, 0.0, 0.0);
>>    sphereSource->SetRadius(5.0);
>>    sphereSource->Update();
>>
>>    vtkSmartPointer<vtkPolyData> poly = sphereSource->GetOutput();
>>
>>    MBPolyData->SetBlock(currBlk, poly);
>>
>>    //Write the PolyData to file
>>    std::ostringstream ss;
>>    ss << "sphere" << currBlk+1 << ".vtp";
>>    vtkSmartPointer<vtkXMLPolyDataWriter> writer =
>>      vtkSmartPointer<vtkXMLPolyDataWriter>::New();
>>    writer->SetInput(poly);
>>    writer->SetFileName(ss.str().c_str());
>>    writer->Write();
>>  }
>>
>>  //Write the MultiBlockData with PolyData to file
>>  vtkSmartPointer<vtkXMLMultiBlockDataWriter> writer2 =
>>    vtkSmartPointer<vtkXMLMultiBlockDataWriter>::New();
>>  writer2->SetInput(MBPolyData);
>>  writer2->SetFileName("all-spheres-PD.vtm");
>>  writer2->Write();
>>
>>  return EXIT_SUCCESS;
>> }
>>
>> =========================================================================
>> CMakeLists.txt:
>> =========================================================================
>> cmake_minimum_required(VERSION 2.6)
>>
>> PROJECT (MBWriterTest)
>>
>> INCLUDE (${CMAKE_ROOT}/Modules/FindVTK.cmake)
>> IF (USE_VTK_FILE)
>>  INCLUDE(${USE_VTK_FILE})
>> ENDIF (USE_VTK_FILE)
>>
>> LINK_LIBRARIES(
>>  vtkHybrid
>> )
>>
>> ADD_EXECUTABLE(mbwritertest mbwritertest.cxx)
>>
>>
>> ===================================
>>
>> Adriano Gagliardi MEng PhD
>> Business Sector Leader
>> Computational Aerodynamics
>> Aircraft Research Association Ltd.
>> Manton Lane
>> Bedford
>>
>> Tel: 01234 32 4644
>> E-mail: agagliardi at ara.co.uk
>> Url: www.ara.co.uk
>> -----Original Message-----
>> From: Berk Geveci [mailto:berk.geveci at kitware.com]
>> Sent: 03 June 2010 13:20
>> To: agagliardi at ara.co.uk
>> Cc: vtkusers at vtk.org
>> Subject: Re: [vtkusers] Error using vtkXMLMultiBlockDataWriter
>>
>> Is this in parallel by any chance?
>>
>> On Wed, Jun 2, 2010 at 10:52 AM, Adriano Gagliardi <agagliardi at ara.co.uk>
>> wrote:
>> >
>> > Just to say that this was using VTK 5.6.0.
>> >
>> > ===================================
>> >
>> > Adriano Gagliardi MEng PhD
>> > Business Sector Leader
>> > Computational Aerodynamics
>> > Aircraft Research Association Ltd.
>> > Manton Lane
>> > Bedford
>> >
>> > Tel: 01234 32 4644
>> > E-mail: agagliardi at ara.co.uk
>> > Url: www.ara.co.uk
>> > -----Original Message-----
>> > From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
>> > Behalf Of Adriano Gagliardi
>> > Sent: 01 June 2010 17:50
>> > To: vtkusers at vtk.org
>> > Subject: [vtkusers] Error using vtkXMLMultiBlockDataWriter
>> >
>> >
>> > Dear Users,
>> >
>> > I have been having an issue with the vtkXMLMultiBlockDataWriter class
>> > that contain instances of vtkPolyData. The code follows. Note that
>> > this same piece of code works fine if the data within the blocks is of
>> > type
>> > vtkUnstructuredGrid:
>> >
>> > ####
>> > //mbdata is a pointer to a vtkMultiBlockDataSet containing either
>> > vtkPolyData or vtkUnstructuredGrid data sets
>> > vtkXMLMultiBlockDataWriter* writer =
>> > vtkXMLMultiBlockDataWriter::New();
>> > std::ostringstream ss;
>> > ss << "debugFiles/data_out.vtm";
>> > writer->SetFileName(ss.str().c_str());
>> > writer->SetInput(mbdata);
>> > writer->Write();
>> > writer->Delete();
>> > ss.str(std::string());
>> > ####
>> >
>> > When using this, I get the following error message:
>> >
>> > ####
>> > ERROR: In
>> > /usr/people/gagliard/Paraview/FILES/VTK5.6/VTK/IO/vtkXMLWriter.cxx,
>> > line 607 vtkXMLPolyDataWriter (0x13473b00): Error opening output file
>> "debugFiles"
>> >
>> > ERROR: In
>> > /usr/people/gagliard/Paraview/FILES/VTK5.6/VTK/IO/vtkXMLWriter.cxx,
>> > line 610 vtkXMLPolyDataWriter (0x13473b00): Error code "Is a directory"
>> >
>> > ERROR: In
>> > /usr/people/gagliard/Paraview/FILES/VTK5.6/VTK/Filtering/vtkExecutive.
>> > cxx,
>> > line 757
>> > vtkStreamingDemandDrivenPipeline (0x134743c0): Algorithm
>> > vtkXMLPolyDataWriter(0x13473b00) returned failure for request:
>> > vtkInformation (0x1347ac00)
>> >  Debug: Off
>> >  Modified Time: 45234
>> >  Reference Count: 1
>> >  Registered Events: (none)
>> >  Request: REQUEST_DATA
>> >  ALGORITHM_AFTER_FORWARD: 1
>> >  FORWARD_DIRECTION: 0
>> >  FROM_OUTPUT_PORT: -1
>> > ####
>> >
>> > I am, however, able to write out each block separately using
>> > vtkXMLPolyDataWriter:
>> >
>> > ####
>> > for ( vtkIdType currBlk = 0; currBlk != mbdata->GetNumberOfBlocks();
>> > ++currBlk ) {
>> >  vtkXMLPolyDataWriter* writer = vtkXMLPolyDataWriter::New();
>> >  std::ostringstream ss;
>> >  ss << "debugFiles/data_out" << currBlk << ".vtp";
>> >  writer->SetFileName(ss.str().c_str());
>> >  writer->SetInput(mbdata->GetBlock(currBlk));
>> >  writer->Write();
>> >  writer->Delete();
>> >  ss.str(std::string());
>> > }
>> > ####
>> >
>> > I am wondering if I'm missing something fundamental that may cause
>> > that error. Hopefully someone else can point out the error as I'm not
>> seeing it.
>> >
>> > Cheers,
>> >
>> > Adriano
>> >
>> > ===================================
>> >
>> > Adriano Gagliardi MEng PhD
>> > Business Sector Leader
>> > Computational Aerodynamics
>> > Aircraft Research Association Ltd.
>> > Manton Lane
>> > Bedford
>> >
>> > Tel: 01234 32 4644
>> > E-mail: agagliardi at ara.co.uk
>> > Url: www.ara.co.uk
>> >
>> >
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>> This email contains information that is private and confidential and is
>> intended only for the addressee.
>> If you are not the intended recipient please delete it and notify us
>> immediately by e-mailing the sender.
>> Note: All email sent to or from this address may be accessed by someone
>> other than the recipient, for
>> system management and security reasons.
>> Aircraft Research Association Ltd.  Registered in England, Registration No
>> 503668 Registered Office:
>> Manton Lane, Bedford MK41 7PF England VAT No GB 196351245
>>
>> **********************************************************************
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
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>>
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>
>
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>
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