[Paraview] How to use a filter in a Python script?

[ghw at accutrol.com]

Dude!  You are sooooo awesome!  Why didn't I think of that?  Because 
I thought trace was for something altogether different from that.  

Now I feel like I can do anything!

Thanks immensely for your help,
Hamilton Woods


---------- Original Message -----------
From: emonson at cs.duke.edu
To: ghw at accutrol.com
Cc: paraview list <paraview at paraview.org>
Sent: Wed, 3 Nov 2010 11:20:47 -0400
Subject: Re: [Paraview] How to use a filter in a Python script?

> Hey Hamilton,
> 
> You should also try using the Python Trace (and Trace State) 
> functionality now built into ParaView. After (or while) you set up 
> your pipeline in ParaView this will give you a Python script to 
> accomplish the same thing. This page tells a bit about the current 
> (git) version:
> 
> http://www.paraview.org/Wiki/Python_GUI_Tools
> 
> You'll see the Start Trace and Trace State if you go to Tools-
> >Python Shell, and then click on the Trace tab on the right of the panel.
> 
> -Eric
> 
> ------------------------------------------------------
> Eric E Monson
> Duke Visualization Technology Group
> 
> On Nov 3, 2010, at 10:00 AM, Sebastien Jourdain wrote:
> 
> > Hi Hamilton,
> > 
> > You can look at http://www.paraview.org/Wiki/ParaView/Python_Scripting
> > and that http://www.paraview.org/Wiki/ParaViewUsersGuide/List_of_filters
> > 
> > Seb
> > 
> > On Tue, Nov 2, 2010 at 10:31 PM,  <ghw at accutrol.com> wrote:
> >> I am a newbie to Paraview and have little experience programming Python.  I
> >> would like to know how to call a particular filter from within Python.  The
> >> only filter I have seen referenced in the Python scripting documentation is
> >> Shrink().
> >> 
> >> I want to retrieve the scalar values along a line segment (Plot Over
> >> Line(ProbeLine)) that extends through an unstructured 3D grid.  I have "The
> >> ParaView Guide", "The VTK User's Guide" and "The Visualization Toolkit:  An
> >> Object-Oriented Approach to 3D Graphics".  I don't see how to
programmatically
> >> do this.  I have looked on all of the ParaView web sites that I can find, and
> >> in tutorials.  I do not even see a list of available filter names.
> >> 
> >> Is there a guide for Python Scripting (chapter 20 of The ParaView Guide
is the
> >> best I have found) that covers using filters?  Example code?  Anything?  How
> >> do you even find the filter names in the documentation?
> >> 
> >> Thanks for any help,
> >> Hamilton Woods
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------- End of Original Message -------