[Paraview] Problems writing an .vtu file

[s.habbinga]

Hello everybody,

I've been trying to write a c++ function to convert my data into .vtu
files. Unfortunately, paraview isn't able to read my .vtu files. I get
the following error-message:

ERROR: In
/home/zam/domini/paraview/ParaView3src/VTK/Filtering/vtkExecutive.cxx,
line 757
vtkCompositeDataPipeline (0x8cf34b0): Algorithm
vtkXMLUnstructuredGridReader(0x8d915d0) returned failure for request:
vtkInformation (0x90c34e8)
  Debug: Off
  Modified Time: 383066
  Reference Count: 1
  Registered Events: (none)
  Request: REQUEST_INFORMATION
  FORWARD_DIRECTION: 0
  ALGORITHM_AFTER_FORWARD: 1


I'm obviously doing something wrong... can anyone help? I really can't
find the error. Below, you find a sample .vtu file.
Thanks in advance!!

Sonja

<?xml version="1.0"?>
<VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
  <UnstructuredGrid>
    <Piece NumberOfPoints="96" NumberOfCells="12">
      <PointData Scalars="process_id">
    <DataArray type="Float32" name="process_id" format="ascii">
      1 1 1 1 1 1 1 1
      2 2 2 2 2 2 2 2
      3 3 3 3 3 3 3 3
      4 4 4 4 4 4 4 4
      5 5 5 5 5 5 5 5
      6 6 6 6 6 6 6 6
      0 0 0 0 0 0 0 0
      7 7 7 7 7 7 7 7
      8 8 8 8 8 8 8 8
      10 10 10 10 10 10 10 10
      9 9 9 9 9 9 9 9
      11 11 11 11 11 11 11 11

    </DataArray>
      </PointData>
      <CellData>
      </CellData>
      <Points>
    <DataArray type="Float32" NumberOfComponents="3" format="ascii">
      0 -37.5 -225 37.5 -37.5 -225 0 0 -225 37.5 0 -225 0 -37.5 -75 37.5
-37.5 -75 0 0 -75 37.5 0 -75
      -37.5 0 -225 0 0 -225 -37.5 37.5 -225 0 37.5 -225 -37.5 0 -75 0 0
-75 -37.5 37.5 -75 0 37.5 -75
      0 0 -225 37.5 0 -225 0 37.5 -225 37.5 37.5 -225 0 0 -75 37.5 0 -75
0 37.5 -75 37.5 37.5 -75
      -37.5 -37.5 -75 0 -37.5 -75 -37.5 0 -75 0 0 -75 -37.5 -37.5 75 0
-37.5 75 -37.5 0 75 0 0 75
      0 -37.5 -75 37.5 -37.5 -75 0 0 -75 37.5 0 -75 0 -37.5 75 37.5
-37.5 75 0 0 75 37.5 0 75
      -37.5 0 -75 0 0 -75 -37.5 37.5 -75 0 37.5 -75 -37.5 0 75 0 0 75
-37.5 37.5 75 0 37.5 75
      -37.5 -37.5 -225 0 -37.5 -225 -37.5 0 -225 0 0 -225 -37.5 -37.5
-75 0 -37.5 -75 -37.5 0 -75 0 0 -75
      0 0 -75 37.5 0 -75 0 37.5 -75 37.5 37.5 -75 0 0 75 37.5 0 75 0
37.5 75 37.5 37.5 75
      -37.5 -37.5 75 0 -37.5 75 -37.5 0 75 0 0 75 -37.5 -37.5 225 0
-37.5 225 -37.5 0 225 0 0 225
      -37.5 0 75 0 0 75 -37.5 37.5 75 0 37.5 75 -37.5 0 225 0 0 225
-37.5 37.5 225 0 37.5 225
      0 -37.5 75 37.5 -37.5 75 0 0 75 37.5 0 75 0 -37.5 225 37.5 -37.5
225 0 0 225 37.5 0 225
      0 0 75 37.5 0 75 0 37.5 75 37.5 37.5 75 0 0 225 37.5 0 225 0 37.5
225 37.5 37.5 225

    </DataArray>
      </Points>
      <Cells>
    <DataArray type="Int32" Name="connectivity" format="ascii">
      0 1 2 3 4 5 6 7
      8 9 10 11 12 13 14 15
      16 17 18 19 20 21 22 23
      24 25 26 27 28 29 30 31
      32 33 34 35 36 37 38 39
      40 41 42 43 44 45 46 47
      48 49 50 51 52 53 54 55
      56 57 58 59 60 61 62 63
      64 65 66 67 68 69 70 71
      72 73 74 75 76 77 78 79
      80 81 82 83 84 85 86 87
      88 89 90 91 92 93 94 95

    </DataArray>
    <DataArray type="Int32" Name="offsets" format="ascii">
      8 16 24 32 40 48 56 64 72 80 88 96
    </DataArray>
    <DataArray type="UInt8" Name="types" format="ascii">
      11 11 11 11 11 11 11 11 11 11 11 11
    </DataArray>
      </Cells>
    </Piece>
  </UnstructuredGrid>
</VTKFile>


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