[Paraview] Creating movies using multiple HDF5 data files

Thu Jan 24 09:17:48 EST 2013

You can only save as avi if you compiled in ffmpeg support.

My advice is save png files and encode them to avi manually. You get better result usually anyway.

JB

From: paraview-bounces at paraview.org [mailto:paraview-bounces at paraview.org] On Behalf Of Pradeep Jha
Sent: 24 January 2013 13:43
To: David E DeMarle
Cc: Pradeep Jha; paraview at paraview.org
Subject: Re: [Paraview] Creating movies using multiple HDF5 data files

Hello David,

thanks for the response. I haven't had a chance to look into it yet. Once I figure it out, I will surely put it on.

I am facing another issue. I want to export a movie in the avi format. When I am trying to export the movie in PV, the "save animation" window is not giving me the option to save it in the avi format (screenshot attached below).  I am using Paraview 3.98. Why is this happening?

Also, I would like to confirm: I load a xmf file in PV with multiple hdf5 filenames declared, each carrying the solution at a different time step. When I apply a filter, say contour for example (as shown in the screenshot), this filter is applied to all the hdf5 files declared in the xmf file? So when I click on the play button in the animation bar, does PV shows me the same features for all the files at different time-steps?

Thanks for your answers,

Regards,
Pradeep

[cid:image001.jpg at 01CDFA45.F7645E90]
Le 18 janv. 2013 à 23:21, David E DeMarle <dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>> a écrit :

See near top of: http://www.xdmf.org/index.php/XDMF_Model_and_Format
I think that either xinclude or xpath can reduce the size of the xdmf
file by acting like a macro that gets repeatedly expanded.

However, I vaguely remember that the last time I tried that approach
it didn't work right off the bat and I moved on to something else. If
you do get it to work, can you please post a code snippet? We can put
it on the wiki for the next person who runs into that problem.

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Thu, Jan 17, 2013 at 9:50 PM, Pradeep Jha
<pradeep at ccs.engg.nagoya-u.ac.jp<mailto:pradeep at ccs.engg.nagoya-u.ac.jp>> wrote:

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<mailto: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.

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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Visit other Kitware open-source projects at
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Please keep messages on-topic and check the ParaView Wiki at:
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Follow this link to subscribe/unsubscribe:
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Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView

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