[vtkusers] Different behavior of vtkXMLPUnstructuredGridWriter in VTK 7.1

[Andy Bauer]

Beyond this I can't think of any change off the top of my head that would
cause your issue. I looked at the repo but can't figure out the VTK
configurations from that. If you can share a simple test case which
demonstrates the issue I may be able to easily diagnose it.

Thanks,
Andy

On Mon, Dec 5, 2016 at 2:02 PM, John Peterson <jwpeterson at gmail.com> wrote:

>
>
> On Mon, Dec 5, 2016 at 11:32 AM, Andy Bauer <andy.bauer at kitware.com>
> wrote:
>
>> Hi,
>>
>> Can you verify that there are indeed points in
>> vtk_diff_serial_mesh_parallel_out_005_1.vtu in the older version of VTK?
>> The PXML writers were changed such that they wouldn't write out data files
>> for data set pieces that didn't have any points.
>>
>
> Yes, there are points in both files.  It's a 2x2 mesh of Quad4 elements
> split into two halves.  Here are the contents of the file you mentioned.
>
> <?xml version="1.0"?>
> <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian"
> header_type="UInt32" compressor="vtkZLibDataCompressor">
>   <UnstructuredGrid>
>     <Piece NumberOfPoints="6" NumberOfCells="2">
>       <PointData>
>         <DataArray type="Float64" Name="aux" format="ascii" RangeMin="0"
> RangeMax="0">
>           0 0 0 0 0 0
>         </DataArray>
>         <DataArray type="Float64" Name="u" format="ascii"
> RangeMin="0.074429857677" RangeMax="1.0000000002">
>           1.0000000002 1.0000000002 1.0000000002 0.074429857677
> 0.074429857773 0.074429857977
>         </DataArray>
>       </PointData>
>       <CellData>
>         <DataArray type="Int32" Name="libmesh_elem_id" format="ascii"
> RangeMin="1" RangeMax="3">
>           1 3
>         </DataArray>
>         <DataArray type="Int32" Name="subdomain_id" format="ascii"
> RangeMin="0" RangeMax="0">
>           0 0
>         </DataArray>
>         <DataArray type="Int32" Name="processor_id" format="ascii"
> RangeMin="1" RangeMax="1">
>           1 1
>         </DataArray>
>       </CellData>
>       <Points>
>         <DataArray type="Float64" Name="Points" NumberOfComponents="3"
> format="ascii" RangeMin="0.5" RangeMax="1.4142135624">
>           1 0 0 1 0.5 0
>           1 1 0 0.5 0 0
>           0.5 0.5 0 0.5 1 0
>         </DataArray>
>       </Points>
>       <Cells>
>         <DataArray type="Int64" Name="connectivity" format="ascii"
> RangeMin="0" RangeMax="5">
>           3 0 1 4 4 1
>           2 5
>         </DataArray>
>         <DataArray type="Int64" Name="offsets" format="ascii" RangeMin="4"
> RangeMax="8">
>           4 8
>         </DataArray>
>         <DataArray type="UInt8" Name="types" format="ascii" RangeMin="9"
> RangeMax="9">
>           9 9
>         </DataArray>
>       </Cells>
>     </Piece>
>   </UnstructuredGrid>
> </VTKFile>
>
>
> --
> John
>
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