[Paraview] Tensor6 in Xdmf

[Utkarsh Ayachit]

I just verified that it works as expected -- it converts the 6
component symmetric tensor to a 9 component tensor. Also you may want
to add the DataType="Float" or similar attribute to your DataItem.

Are you using ParaView 3.6.* or earlier? If that's the case, give the
3.8 release candidates a try.

Utkarsh

On Fri, Apr 16, 2010 at 10:15 AM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> If someone can send me simple xdmf sample with tensors, I can easily
> track this down.
>
> Utkarsh
>
> On Thu, Apr 15, 2010 at 3:07 AM, Biddiscombe, John A. <biddisco at cscs.ch> wrote:
>> I had the same trouble a while ago, (I think) the trouble arises from the Xdmf assuming that a tensor is 9 components and therefore rejects a 6 way tensor and treats it like a scalar. I thought this was fixed at some time, I may be wrong. Either way, look at the Xdmf reader code, scan through for references to tensors and tweak it to say 6 instead of 9 (or whatever), you can make it work for a quick fix.
>>
>> JB
>>
>>> -----Original Message-----
>>> From: paraview-bounces at paraview.org [mailto:paraview-bounces at paraview.org]
>>> On Behalf Of Felipe Bordeu Weldt
>>> Sent: 14 April 2010 18:19
>>> To: paraview at paraview.org
>>> Subject: [Paraview] Tensor6 in Xdmf
>>>
>>> Hi,
>>>
>>> I'm trying to read a "home made" xdmf file into paraview but, a get
>>> the following error:
>>>
>>> Warning: In /Users/partyd/Kitware/ParaView-3.6/ParaView3/VTK/Filtering/
>>> vtkDataSet.cxx, line 447
>>> vtkUnstructuredGrid (0x1fa64d80): Cell array Eps2 with 1 components,
>>> has 11376 tuples but there are only 1896 cells
>>>
>>> Tensor6 implies a value with 6 components ???
>>> Why paraview thinks that Tensor6 is a 1 components  field???
>>>
>>> --- extract of the xdmf file ---
>>> ...
>>>         <Attribute Name="Eps2" Center="Cell"  AttributeType="Tensor6" >
>>>             <DataItem Format="XML" Dimensions="1896 6">
>>>    0.00053052  -0.00004700  -0.00009759   0.00005925  -0.00000354
>>> 0.00008632
>>>    0.00049287  -0.00008033  -0.00017234   0.00000038  -0.00000417
>>> 0.00004718
>>> ...
>>> ----------------------------------
>>>
>>> Thanks
>>> Felipe
>>>
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>