[Paraview] Problems reading 2nd order mixed meshes in xdmf format

[Dominik Szczerba]

http://www.vtk.org/Bug/view.php?id=14353

On Wed, Oct 23, 2013 at 3:56 PM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
> Hi
>
> PV is crashing reading a real-life mixed mesh, so in attempt to debug
> the problem I created one-element mesh only to find that it also does
> not work. I do not see why it should not work, according to the specs?
> I have originally attached the mesh that causes the error. Here it is
> again. I will try to report a bug at the bug tracker.
>
> <?xml version="1.0" ?>
> <Xdmf>
> <Domain Name="Unnamed">
> <Grid Name="Mesh">
>
> <Geometry GeometryType="XYZ">
>   <DataItem Format="XML" Dimensions="10 3">
>     0.0 0.0 0.0
>     1.0 0.0 0.0
>     0.0 1.0 0.0
>     0.0 0.0 1.0
> 0.5 0.0 0.0
> 0.5 0.5 0.0
> 0.0 0.5 0.0
> 0.0 0.0 0.5
> 0.5 0.0 0.5
> 0.0 0.5 0.5
>   </DataItem>
> </Geometry>
>
> <Topology TopologyType="Mixed" NumberOfElements="1" >
>   <DataItem Format="XML" DataType="Int" Dimensions="11">
>     26   0 1 2 3 4 5 6 7 8 9
>   </DataItem>
> </Topology>
>
> </Grid>
> </Domain>
> </Xdmf>
>
> Regards,
> Dominik
>
> On Mon, Oct 21, 2013 at 9:34 PM, Jason Fleming
> <jason.fleming at seahorsecoastal.com> wrote:
>> Hello Dominik
>>
>> It looks like maybe you haven't provided enough information to Paraview
>> about your Topology. You've set the TopologyType to Mixed, but this is for a
>> mixture of elements of different types, whereas you actually only have one
>> single element of a single type.
>>
>> Looking at xdmf.org, it looks like the value "Tet_10" is available for
>> TopologyType. Is this value appropriate for you? I took your example xml and
>> changed Mixed to Tet_10 and was then able to load the file into Paraview.
>>
>> Cheers
>> Jason
>>
>>
>>
>>
>>
>> On Mon, Oct 21, 2013 at 10:24 AM, Dominik Szczerba <dominik at itis.ethz.ch>
>> wrote:
>>>
>>> I have received no feedback to my question. Did I overlook something
>>> obvious and it means that there are better / more popular formats for
>>> such datasets supported by ParaView?
>>>
>>> Regards,
>>> Dominik
>>>
>>> On Wed, Oct 9, 2013 at 1:00 PM, Dominik Szczerba <dominik at itis.ethz.ch>
>>> wrote:
>>> > Hi,
>>> >
>>> > I am unable to load the following trivial (one second order tet
>>> > element) into Paraview. I would be very glad for some pointers how to
>>> > fix it...
>>> >
>>> > Regards
>>> > Dominik
>>> >
>>> > <?xml version="1.0" ?>
>>> > <Xdmf>
>>> > <Domain Name="Unnamed">
>>> > <Grid Name="Mesh">
>>> >
>>> > <Geometry GeometryType="XYZ">
>>> >   <DataItem Format="XML" Dimensions="10 3">
>>> >     0.0 0.0 0.0
>>> >     1.0 0.0 0.0
>>> >     0.0 1.0 0.0
>>> >     0.0 0.0 1.0
>>> > 0.5 0.0 0.0
>>> > 0.5 0.5 0.0
>>> > 0.0 0.5 0.0
>>> > 0.0 0.0 0.5
>>> > 0.5 0.0 0.5
>>> > 0.0 0.5 0.5
>>> >   </DataItem>
>>> > </Geometry>
>>> >
>>> > <Topology TopologyType="Mixed" NumberOfElements="1" >
>>> >   <DataItem Format="XML" DataType="Int" Dimensions="11">
>>> >     26   0 1 2 3 4 5 6 7 8 9
>>> >   </DataItem>
>>> > </Topology>
>>> >
>>> > </Grid>
>>> > </Domain>
>>> > </Xdmf>
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>>
>>
>>
>> --
>> Dr. Jason G. Fleming
>> Chief Engineer, Seahorse Coastal Consulting
>> 3103 Mandy Ln
>> Morehead City, NC 28557
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