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    Hello,<br>
    <br>
    I have some problem writing a .vtu file in XML format. It does not
    open in Paraview and the error message is :<br>
    <br>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">ERROR:
        In /build/buildd/paraview-3.14.1/VTK/Filtering/vtkExecutive.cxx,
        line 756</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">vtkPVCompositeDataPipeline

        (0x220ce50): Algorithm vtkXMLUnstructuredGridReader(0x2212ab0)
        returned failure for request: vtkInformation (0x1065580)</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        Debug: Off</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        Modified Time: 71455</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        Reference Count: 1</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        Registered Events: (none)</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        Request: REQUEST_INFORMATION</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        ALGORITHM_AFTER_FORWARD: 1</span></p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
      margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span
        style=" font-family:'Courier'; font-size:9pt; color:#800000;">
        FORWARD_DIRECTION: 0</span></p>
    <br>
    Although I have searched and found similar issues in the archives of
    the mailing, I can't manage to find out what I am doing wrong.<br>
    <br>
    I only want to store point location informations as well as cell
    connectivities to visualize unstructured mesh made of triangles and
    quads in paraview.&nbsp; Does anyone could have a look at my problem ?<br>
    <br>
    Here is the headers of my file :<br>
    <br>
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
    <br>
    <div class="moz-signature">&lt;?xml version="1.0"?&gt;<br>
      &lt;VTKFile type="UnstructuredGrid" version="0.1"
      byte_order="BigEndian"&gt;<br>
      &nbsp; &lt;UnstructuredGrid&gt;<br>
      &nbsp;&nbsp;&nbsp; &lt;Piece NumberOfPoints="&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 867"
      NumberOfCells="&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 976"&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;Points&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;DataArray type="Float64" NumberOfComponents="3"
      Name="Point" format="ascii"&gt;<br>
      &nbsp;0.000000000000000E+000-0.150000000000000E+002
      0.000000000000000E+000<br>
      -0.492403900000000E+001-0.150000000000000E+002
      0.868241000000000E+000<br>
&nbsp;0.000000000000000E+000-0.150000000000000E+002-0.500000000000000E+001<br>
      [...]<br>
      -0.408073000000000E+001 0.150000000000000E+002
      0.408662000000000E+000<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/DataArray&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/Points&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;Cells&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;DataArray type="Int32" Name="connectivity"
      format="ascii"&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 201<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 205<br>
      &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; [...]<br>
      &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; 80<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 821<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/DataArray&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;DataArray type="Int32" Name="offsets"
      format="ascii"&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3674<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3678<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/DataArray&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;DataArray type="Int8" Name="types" format="ascii"&gt;<br>
      &nbsp;&nbsp;&nbsp; 5<br>
      &nbsp;&nbsp;&nbsp; 5<br>
      &nbsp;&nbsp;&nbsp; [...]<br>
      &nbsp;&nbsp;&nbsp; 9<br>
      &nbsp;&nbsp;&nbsp; 9<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/DataArray&gt;<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &lt;/Cells&gt;<br>
      &nbsp;&nbsp;&nbsp; &lt;/UnstructuredGrid&gt;<br>
      &lt;/VTKFile&gt;<br>
      <br>
      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
      <br>
      I could also send the entire file for testing purpose.<br>
      <br>
      Best wishes !<br>
      Fran&ccedil;ois.<br>
      <br>
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      <b>Fran&ccedil;ois Rong&egrave;re</b><br>
      <i>PhD., Research Engineer</i><br>
      <br>
      Hydrodynamics, Energetics and Atmospheric Environment Laboratory<br>
      LHEEA - CNRS UMR6598<br>
      <br>
      <i>Ocean Energy and Ocean Waves Group</i><br>
      <br>
      <b>Ecole Centrale de Nantes</b><br>
      1 rue de la Noe - BP92101<br>
      44321 Nantes Cedex 3<br>
      FRANCE<br>
      <br>
      <br>
      Web : <a class="moz-txt-link-freetext" href="http://www.ec-nantes.fr">http://www.ec-nantes.fr</a><br>
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