[Paraview] Probe location in a script

[Armin Wehrfritz]

I typically use VTK directly when I want to access the raw data from 
python/numpy.  See the series of Blog post by Berk Geveci for more 
information on that: http://kitware.com/blog/home/post/709

In ParaView, to my understanding, you first have to get the data from 
the backend to the frontend with "servermanager.Fetch".  I attached a 
modified version of the script that shows you how to do this in a 
quick-and-dirty way.  See more here: 
http://www.paraview.org/Wiki/ParaView/Python_Scripting

If there is a better way to get access to the raw data, I would be 
really happy to learn how to do this.

Best regards,
Armin





On 07/03/2015 11:21 AM, mctolille at netcourrier.com wrote:
> Thanks for the script, but how can I now access the data that were found
> by ProbeLocation? How can I put them in a variable, print them on the
> screen?
>
> Cheers,
> Mc Fly
>
>
>
>
> ---- Message d'origine ----
> De : "Armin Wehrfritz" <dkxls23 at gmail.com>
> À : paraview at paraview.org
> Objet : Re: [Paraview] Probe location in a script
> Date : 02/07/2015 17:07:42 CEST
>
> Here is a little script that shows you how to read and write dataset in
> ParaView using a simple for loop.
>
> Hope this helps.
>
> -Armin
>
>
>
>
> On 07/02/2015 05:47 PM, mctolille at netcourrier.com wrote:
>  > Thanks for the tip. I actually already used tracing in order to find the
>  > command:
>  > Probelocation.ProbeType.Center = [10.0,20.0,30.0]
>  >
>  > But the problem is that I don't know how to access to the data (rho, vx,
>  > vy...) at that location in the python script
>  >
>  > And since tracing does not capture "Save data", I don't even know how to
>  > write the data in a file
>  >
>  > Cheers,
>  > Mc Fly
>  >
>  >
>  >
>  >
>  > Date : 02/07/2015 15:55:04 CEST
>  >
>  > Hi McFly,
>  >
>  > The Python Tracing facility in ParaView is perfect for this kind of
>  > task. It records a trace of your actions in the ParaView GUI to a Python
>  > script that you can modify a bit to process a bunch of files. To turn on
>  > tracing, choose the Tools -> Start Trace menu item.
>  >
>  > More info on tracing is available in the ParaView User Guide [1] under
>  > section 1.6.2.
>  >
>  > Best regards,
>  > Cory
>  >
>  > [1] http://www.paraview.org/paraview-guide/
>  >
>  > On Thu, Jul 2, 2015 at 9:39 AM, <mctolille at netcourrier.com
>  > <mailto:mctolille at netcourrier.com>> wrote:
>  >
>  > __
>  >
>  > Hi everybody,
>  >
>  > I am a new Paraview user. I am trying to extract points from a bunch
>  > of vtu files. It is pretty easily done with "probe location". But
>  > since I have a lot of files, I would like to automatize the process
>  > (with a macro or a python script).
>  >
>  > Could someone maybe show me how it's done?
>  >
>  > My best guess is that I should have the following in a python script:
>  > Probelocation.ProbeType.Center = [10.0,20.0,30.0]
>  > assuming I want to probe at x=10, y=20, z=30. But then, I don't
>  > really know how to retrieve the variables values at that location.
>  >
>  > Thanks a lot,
>  > Mc Fly
>  >
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>  > --
>  > Cory Quammen
>  > R&D Engineer
>  > Kitware, Inc.
>  >
>  >
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> _______________________________________________
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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:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
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>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
>
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