Matt,
Dude! You are sooo awesome! Now, how can I impress my
customers if all of the magic is gone?
You have been reading my mail. You are correct. I am interested
in integrating the data values along a line segment (in this case,
density). I have actually been doing this in TECPLOT, on an OLD
Linux box. The license upgrade for TECPLOT is prohibitively
expensive and I am concerned that some day the Gateway 166 MHz
box will die. Therefore, I am converting my TECPLOT tools over
to ParaView.
ParaView rocks! And so does this community!
Thanks for all your help,
Hamilton Woods
-- Original Message ---
From: m.c.wilk...@massey.ac.nz
To: g...@accutrol.com
Cc: paraview@paraview.org
Sent: Thu, 4 Nov 2010 10:27:05 +1300
Subject: Re: [Paraview] How to use a filter in a Python script?
Hi,
Yes the trace is great, it still couldn't tell me how to actually
extract the numbers along a plotoverline though, without doing a
Spreadsheet view or something.
You have probably figured out how to do a plotoverline using the Trace:
from paraview.simple import *
reader = servermanager.sources.XMLUnstructuredGridReader(FileName =
/var/tmp/file.vtu) pl = PlotOverLine(Input = reader)
pl.Source.Point1 = [-7000, -5000, 0] pl.Source.Point2 = [4300, 6300,
.75] CreateXYPlotView() d = Show()
d.XArrayName = 'arc_length'
d.SeriesVisibility = ['namecolours (0)', '0', 'namecolours (1)', '0',
'namecolours (2)', '0', 'vtkValidPointMask', '0', 'arc_length',
'0'] # whatever your variables are
d.UseIndexForXAxis = 0 Render()
But to actually get the values out you don't even need to do the plot
a simple:
from paraview.simple import *
reader = servermanager.sources.XMLUnstructuredGridReader(FileName =
/var/tmp/file.vtu) pl = PlotOverLine(Input = reader)
pl.Source.Point1 = [-7000, -5000, 0] pl.Source.Point2 = [4300, 6300,
.75]
does, followed by stuff like this:
# to get the number of points on the plotoverline line
pl = servermanager.Fetch(pl)
pl.GetPoints().GetData().GetNumberOfPoints()
# to get the (x,y,z) info for the points on the pol line
pl.GetPoints().GetData().GetValue(0) - x of first point
pl.GetPoints().GetData().GetValue(1) - y of first point
pl.GetPoints().GetData().GetValue(2) - z of first point
etc
# to get the data on the line
pl.GetPointData().GetArray(0).GetValue(0)
etc
# and to get the name of the array on the line
pl.GetPointData().GetArrayName(0) - 'cfnode'
etc
Matt Wilkins
On Wed, Nov 03, 2010 at 11:38:25AM -0400, g...@accutrol.com wrote:
Dude! You are so 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: g...@accutrol.com
Cc: paraview list paraview@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, g...@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?
