[Paraview] Problem with saving data along stream trace in parallel

[Andy Bauer]

The point data arrays are probably ordered differently on separate blocks
or there are different point data arrays on different blocks. My suggestion
is to use a python programmable filter to remove the unneeded arrays or to
reorder them.

Andy

On Monday, December 2, 2013, Ben Colcord wrote:

> Hello,
>
> I'm trying to extract data along a streamline. I have a script that works
> fine in serial, but gives errors in parallel. I get the same errors if I
> use the GUI or if I run the script with pvbatch, so I don't think it's a
> problem with the script. The errors I get are:
>
> ERROR: In /nv/hp25/bcolcord3/ParaView/VTK/Common/Core/vtkDataArray.cxx,
> line 474
> vtkDoubleArray (0xd4058a00): The number of components do not match the
> number requested: 3 != 1
>
> Warning: In /nv/hp25/bcolcord3/ParaView/VTK/Common/DataModel/vtkTable.cxx,
> line 421
> vtkTable (0xd4634a60): Cannot assign this variant type to multi-component
> data array.
>
> These errors occur when I do "writer.UpdatePipeline()" in the script, or
> "Save Data" in the GUI. Output is still produced, but the attached images
> show the problem. The streamline co-ordinates are OK, but the density along
> the streamline is not.
>
> I'm using ParaView 4.01, commit 8bab4fd99bda5b0b8748. My dataset is
> Multi-block, and I apply the following filters before attempting writing:
>
> CellDatatoPointData
> ProgrammableFilter (to remove ghost layers)
> Calculator (to create velocity vector from components)
> StreamTracer
>
> As you can see, it's a very simple task, but I can't get it to work in
> parallel. Any help would be greatly appreciated.
>
> Thank you.
>
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