[Paraview] Access point/cell data as Python variable

[David E DeMarle]

It isn't easy to get the the values, because the client only accesses
proxies for the filters and data objects, which often exist on remote
distributed memory parallel machines.

Three strategies:
1) write a python programmable filter. That runs in parallel on remote
machines and has access to the actual data.
2) use servermanager.Fetch to copy the data to the client
3) if you are never going to run in parallel, you can use
proxy.GetClientSideObject()

Personally I recommend #1.



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

On Tue, Dec 15, 2015 at 5:22 PM, David Larsson <david.larsson at sth.kth.se>
wrote:

> Dear all,
>
>
> I am working with imported temporal velocity fields (from pvd/vtu) files.
>
>
> Does anyone know how I in pvpython can access point or cell data as a
> specified variable (array)?
> I easily find out how to load data into paraview using the Python tracer
> ('solutoinpvd = PVDReader(FielName='myfile.pvd')) but can't seem to know
> how to access the velocity field in pvpython after that.
>
>
> I want the point or cell data loaded in specified variables in order
> to modify e.g. the velocity or calculated vorticity field through scripting
> (as an example, set all values >0 to a given value), but I can't seem to
> find these variables (or set variables to them).
>
>
> Thanks for the help.
>
>
> /David
>
>
>
>
> <https://webmail.kth.se/owa/redir.aspx?C=IxWYxXymHES_fQvc4qU3B9BOtBARstEIlfcjHJ6nx0MeBY57EwkoSX2SdYQPib-GqeXHouLYnDA.&URL=mailto%3adavid.larsson%40sth.kth.se>
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