[Paraview] Creating movies using multiple HDF5 data files

[Pradeep Jha]

Hello,

thanks for the response. I managed to create and xdmf file that seems to be
working.

But I want to know if I can make the file more concise. I am dealing with a
simple cube of dimension 512^3 for all time steps and the name of my
variables and everything remains the same. Only the filename changes. Right
now my xmf file looks like this:

------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" ?>
<!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>
<Xdmf Version="2.0">
  <Domain>
<!-- First time step -->
    <Grid Name="Box" GridType="Collection" CollectionType="Temporal">
    <Grid Name="Box 0" GridType="Uniform">
      <Topology TopologyType="3DCoRectMesh" Dimensions="512 512 512"/>
      <Geometry GeometryType="ORIGIN_DXDYDZ">
        <DataItem DataType="Float" Dimensions="3" Format="XML">0.0 0.0
0.0</DataItem>
        <DataItem DataType="Float" Dimensions="3" Format="XML">0.1 0.1
0.1</DataItem>
      </Geometry>
      <Time Value="0.0" />
      <Attribute Name="w1" AttributeType="Scalar" Center="Node">
        <DataItem Dimensions="512 512 512" NumberType="Float" Precision="4"
Format="HDF">
          w1_111.h5:/w1
        </DataItem>
      </Attribute>
    </Grid>
<!-- second time step -->
    <Grid Name="Box 7" GridType="Uniform">
      <Topology TopologyType="3DCoRectMesh" Dimensions="512 512 512"/>
      <Geometry GeometryType="ORIGIN_DXDYDZ">
        <DataItem DataType="Float" Dimensions="3" Format="XML">0.0 0.0
0.0</DataItem>
        <DataItem DataType="Float" Dimensions="3" Format="XML">0.1 0.1
0.1</DataItem>
      </Geometry>
      <Time Value="2.0" />
      <Attribute Name="w1" AttributeType="Scalar" Center="Node">
        <DataItem Dimensions="512 512 512" NumberType="Float" Precision="4"
Format="HDF">
          w1_465.h5:/w1
        </DataItem>
      </Attribute>
    </Grid>
    </Grid>
 </Domain>
</Xdmf>
------------------------------------------------------------------------------------------------------------------------

But if I want to read like 10 variables from the same file, and I have
around 100 time steps, this file can become extremely long and ugly. Is
there a more elegant format of XMF file? It seems stupid to repeat the grid
and variable name information again and again unless they really change.

Thanks
Pradeep


2013/1/17 Felipe Bordeu <felipe.bordeu at ec-nantes.fr>

> You can generate one (and only one) xdmf file with "temporal information",
> pointing to each one of your HDF5 files. So ParaView will be aware of the
> temporal dimension of your data.
>
> More info in  http://www.xdmf.org/index.php/**XDMF_Model_and_Format<http://www.xdmf.org/index.php/XDMF_Model_and_Format>
> .
>
> Felipe
>
>
> Le 17/01/2013 03:17, Pradeep Jha a écrit :
>
>> Hello,
>>
>> I have multiple HDF5 data files containing information at different time
>> steps of a flow simulation. I am using a XDMF file to visualize them.
>>
>> I want to visualize the evolution of a particular iso-surface and data
>> over a slice. How can I perform the same set of operation over all these
>> files and then combine them together to make a movie out of it? Should I
>> save a python state file of one time step and then use pvpython to combine
>> all these python state files? There are over 1000 time steps, so I cannot
>> do it manually.
>>
>> Also, is there any specific trick to make the movie in real time?
>>
>> Thanks,
>> Pradeep
>>
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>
> --
> Felipe Bordeu Weldt
> Ingénieur de Recherche
> ------------------------------**-------
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