[Paraview] VTK files with only points

[D Haley]

Hello,

I am trying to use paraview to visualise molecular dynamics results, as a function of time. I am following the example of

http://www.geophysik.uni-muenchen.de/intranet/it-service/applications/paraview/animations-with-paraview/

and writing a pvd file from my results which references one VTU per timestep. However, the VTU file that the PVD refers to won't open, and spits out the following error when trying to open one directly:


ERROR: In /home/user/source/ParaView3/VTK/Filtering/vtkExecutive.cxx, line 757
vtkStreamingDemandDrivenPipeline (0x253d920): Algorithm vtkXMLUnstructuredGridReader(0x253cbe0) returned failure for request: vtkInformation (0x253dc20)
  Debug: Off
  Modified Time: 984588
  Reference Count: 1
  Registered Events: (none)
  Request: REQUEST_INFORMATION
  FORWARD_DIRECTION: 0
  ALGORITHM_AFTER_FORWARD: 1

My VTU file looks like this:


<VTKFile type="UnstructuredGrid" version="0.1" byte_order="BigEndian">
<UnstructuredGrid>
<Piece NumberOfPoints="4">
<Points>
        <DataArray type="Float32" NumberofComponents="3" NumberofCells="0" Format="ascii">
                0.000105948 0.000105948 0.999478
                0.000105948 0.999478 0.000105948
                0.999478 0.000105948 0.000105948
                0.000310148 0.000310148 0.000310148
        </DataArray>
</Points>
</Piece>
</UnstructuredGrid>
</VTKFile>


Does anyone know what is wrong?

Thanks.