[Paraview] Fetching data from xdmf temporal collection

[Armin Wehrfritz]

I'm not quite sure what the problem here is.
However, I think this is nothing XDMF specific, but rather a general 
question on how to access the raw data in ParaView at a certain time level.
Am I correct with this Jean-Michel?

I attached a script that simply loads a xdmf file, steps though all 
time-steps, renders the data and prints the min/max values of the 
selected field.

There are probably better ways to do this though.
Generally, I prefer to use VTK directly for such kind of tasks, 
especially with the new VTK dataset adapter [1].

-Armin


[1] http://www.kitware.com/blog/home/post/709



On 03/18/2015 04:19 PM, Jean-Michel wrote:
> Hi Ken,
>
> Thank you very much for offering your help.
> Attached is the xmf file from which I'm trying to extract the data. I did
> delete a fair amount of lines from it to keep only the first 10 time steps -
> hope it won't affect anything.
>
> Jean-Michel
>
> -----Message d'origine-----
> De : Ken Sheldon [mailto:KSheldon at slb.com]
> Envoyé : mercredi 18 mars 2015 14:55
> À : paraview at paraview.org
> Cc : jm.lucas at gantha.com
> Objet : RE: [Paraview] Fetching data from xdmf temporal collection
>
> Jean-Michel
> I find the reader is very sensitive to input errors. The diagnostic messages
> are not always sufficient to identify mistakes in the XDMF file. I spent
> some time getting this to work for some our data.  If you would like send me
> a copy of your XDMF (not the HDF5), or at least the first few timesteps of
> it, I would be happy to take a look.
> ----Ken
>
> Date: Tue, 17 Mar 2015 17:46:08 +0100
> From: "Jean-Michel" <jm.lucas at gantha.com>
> To: <paraview at paraview.org>
> Subject: [Paraview] Fetching data from xdmf temporal collection
> Message-ID: <001b01d060d1$df435e70$9dca1b50$@lucas at gantha.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear all,
>
> I am trying to fetch data out of a xdmf/h5 file.
>
> My xdmf file is a temporal collection and the xdmf reader recognizes the
> time steps (index/values in the information block).
>
> I would like to access the point data for each time steps. However, I seem
> to only get one time step when fetching the point data from the multi-block
> dataset and I don't know how to iterate over the different time steps.
>
> Hope somebody can help. Thank you very much,
>
> Jean-Michel
>
>
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