[vtkusers] Re: file format conversion (XML <-> simple legacy format)

[Martin Baumann]

Is it generally possible to save more than one scalar / vector into one 
file using vtk's writers?
It seems to me as if one could only save ONE scalar / vector.

Regards, M.B.


Martin Baumann schrieb:

>Hi,
>
>I just realized, that I have the same problem using vtkUnstructuredGridReader and vtkUnstructuredGridWriter:
>
>  // read orginal file
>  vtkUnstructuredGridReader*    _grid_reader      = vtkUnstructuredGridReader::New();
>  _grid_reader->SetFileName(in_file.c_str());
>  _grid_reader->Update();
>  cout << "#Points : " << _grid_reader->GetOutput()->GetNumberOfPoints() << endl;
>  cout << "#Scalars: " << _grid_reader->GetNumberOfScalarsInFile() << endl;
>
>  // writer new file
>  vtkUnstructuredGridWriter* _grid_writer  = vtkUnstructuredGridWriter::New();
>  _grid_writer->SetFileName("camembert.new.hvs");
>  _grid_writer->SetInput(_grid_reader->GetOutput());
>  _grid_writer->Write();
>
>  // read new file
>  _grid_reader->SetFileName("camembert.new.hvs");
>  _grid_reader->Update();
>  cout << "#Points : " << _grid_reader->GetOutput()->GetNumberOfPoints() << endl;
>  cout << "#Scalars: " << _grid_reader->GetNumberOfScalarsInFile() << endl;
>
>
>This makes the following output:
>
>  #Points : 400
>  #Scalars: 3
>  #Points : 400
>  #Scalars: 1
>
>Hmmm....
>
>Regards, M.B.
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