[Paraview] Named blocks in pvd Collection with time series

[Cory Quammen]

Hi Giuseppe,

Your patch for ParaView that sets the block name to the name attribute in
the PVD file has just been merged to the master branch.

https://gitlab.kitware.com/paraview/paraview/merge_requests/454

Thank you for contributing to ParaView!

Best regards,
Cory


On Mon, Nov 2, 2015 at 8:49 AM, Giuseppe Bilotta <giuseppe.bilotta at gmail.com
> wrote:

> Hello all,
>
> I have the following situation: I have multiple dataset created by the
> same simulation, evolving in time. I'm currently presented wit two
> options to preserve time information:
>
> Option 1: I create a pvd in the form:
>
> <?xml version='1.0'?>
> <VTKFile type='Collection' version='0.1'>
> <Collection>
> <DataSet timestep='0' part='1' name='Planes' file='PLANES.vtu'/>
> <DataSet timestep='0' part='2' name='WaveGages' file='WaveGage_00000.vtu'/>
> <DataSet timestep='0' part='3' name='Particles' file='PART_00000.vtu'/>
> <DataSet timestep='0.00049' part='1' name='Planes' file='PLANES.vtu'/>
> <DataSet timestep='0.00049' part='2' name='WaveGages'
> file='WaveGage_00001.vtu'/>
> <DataSet timestep='0.00049' part='3' name='Particles'
> file='PART_00001.vtu'/>
> <!-- etc for the other timesteps -->
> </Collection>
> </VTKFile>
>
> which is efficient (single index file) but annoying UI-wise (since the
> names of the data sets are not used in the muti-block inspector or in
> the extract block filter)
>
> Option 2: I have the pvd point, for each timestep, to a single .vtm
> file which in turns points to the multiple vtu files for that
> timestep: so the pvd is like
>
> <?xml version='1.0'?>
> <VTKFile type='Collection' version='0.1'>
> <Collection>
> <DataSet timestep='0' group='' part='0' file='data_00000.vtm'/>
> <DataSet timestep='0.00049' group='' part='0' file='data_00001.vtm'/>
> </Collection>
> </VTKFile>
>
> and each vtm is like:
>
> <?xml version='1.0'?>
> <VTKFile type='vtkMultiBlockDataSet' version='1.0'>
> <vtkMultiBlockDataSet>
> <DataSet index='0' name='Planes' file='PLANES.vtu'/>
> <DataSet index='1' name='WaveGages' file='WaveGage_00000.vtu'/>
> <DataSet index='2' name='Particles' file='PART_00000.vtu'/>
> </vtkMultiBlockDataSet>
> </VTKFile>
>
> This has the advantage that the name of each dataset appears in the
> block extraction tool, but the disadvantage that I have to create one
> additional file per timestep (which may be a LOT of extra files)
>
> I've also tried Option 3: a pvd pointing to one pvd per block, and
> each pvd having the time series for that block, but this simply
> segfaults paraview.
>
> So my question is: is there a way to combine the compactness offered
> Option 1 with the possibility to see the block names in the UI offered
> by Option 2? I've also tried to play around with the group option in
> the pvd dataset entries, to no effect (and I'm still not clear on the
> difference between group and part, so any clarification on this is
> also welcome).
>
> Thanks in advance and best regards,
>
>
> --
> Giuseppe "Oblomov" Bilotta
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-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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