Of course, hours after this second message I solved it! So for future
reference, this is my approach:
After slicing through the contour lines, label the points as follows:
slice = Slice(Input=myContourLines, SliceType='Plane')
slice.SliceType.Origin=[0,0,0]
slice.SliceType.Normal=[0,0,1]
di = slice.GetDataInformation()
nPoints = di.GetNumberOfPoints()
# vital missing piece of information follows: create a selection source
selectSource = IDSelectionSource()
# populate it with the IDs of the points to be selected
# this is a list that is [0L,0L,0L,1L,0L,2L,...,0L,nL]
IDs = []
for i range(nPoints):
IDs.append(0L)
IDs.append(long(i))
# set the IDs and set the selection input
selectSource.IDs = IDs
slice.SetSelectionInput(0,selectSource,0)
# render the image & modify the label visibility and formatting
rep = Show()
rep.SelectionPointLabelVisibility = 1
rep.SelectionPointFieldDataArrayName = 'Pressure'
rep.SelectionPointLabelFormat = '%3.2f'
rep.SelectionPointSize = 0
rep.SelectionPointLabelColor = [0,0,0]
Kudos to Utkarsh, whose post from 2010 showed the use of a SelectionSource and
put me on the right track.
Gr.
Menno
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Deij, Menno
Sent: Tuesday, February 28, 2012 11:39 AM
To: [email protected]
Subject: Re: [Paraview] Python scripting of selection / labels on contours
Anyone have any ideas on making selections from Python script in ParaView? Or
how to put labels with values on contours?
Thanks and best wishes,
Menno Deij
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Deij, Menno
Sent: Friday, February 17, 2012 1:35 PM
To: [email protected]
Subject: [Paraview] Python scripting of selection / labels on contours
Dear all,
What I'm trying to achieve is to get labels on contourlines from a python
script (that is, non-interactively). To get started, I followed the following
advice given on the list on Sep 13, 2010:
"Try doing a slice through all the contour lines, and then selecting the points
on the slice that you want to label. Then turn on the selection inspector and
show point labels with the variable you want to plot. I've found the number of
trailing zeros is a bit annoying, as there's no control over the number format,
and I normally choose integer values for the contours. The selection labels
aren't persistent so a state file will lose these labels, and you'll have to
reselect them if you need another plot."
This works very well in interactive mode when the user makes the selection
using the selection tool.
Now, what I want to achieve is to do this from a Python script. I have not been
able to reproduce the result if I follow or interpret the output from Python
trace when I perform the actions described.
So: if you have any ideas on 1) to achieve selections from python script and/or
2) to create labels on contourlines from python script, I'd be very much
obliged.
All the best,
Menno
dr. ir. Menno A. Deij
Software Engineer
Maritime Simulation Group
E mailto:[email protected]
T +31 317 49 35 06
MARIN
2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands
T +31 317 49 39 11, F , I www.marin.nl
_______________________________________________
Powered by www.kitware.com
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
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
_______________________________________________
Powered by www.kitware.com
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
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
_______________________________________________
Powered by www.kitware.com
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
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
