Excellent!
One question – my user may want to use Opacity mapping. The code
below changes the Mapping Data view, removing the Opacity part of the
view. Is there a way to return it to normal, enabling Opacity Mapping?
Thanks
*From:*Burlen Loring [mailto:[email protected]]
*Sent:* Tuesday, March 17, 2015 2:17 PM
*To:* Scott, W Alan; [email protected]
*Subject:* Re: [EXTERNAL] Re: [Paraview] Trace recorder and presets
(color table)
Hi Alan,
The verbosity of the trace can be confusing, 90% of it is unnecessary,
and can be removed. Here's how it looks in your example with
unnecessary stuff removed and the 3 lines added to change the lut by name.
#### import the simple module from the paraview
from paraview.simple import *
#### disable automatic camera reset on 'Show'
paraview.simple._DisableFirstRenderCameraReset()
# create a new 'Wavelet'
wavelet1 = Wavelet()
# get active view
renderView1 = GetActiveViewOrCreate('RenderView')
# uncomment following to set a specific view size
# renderView1.ViewSize = [856, 797]
# show data in view
wavelet1Display = Show(wavelet1, renderView1)
# change representation type
wavelet1Display.SetRepresentationType('Surface')
*# change lookup table**
wavelet1Display.ColorArrayName = 'RTData'
w_arr = wavelet1.PointData.GetArray('RTData')
wavelet1Display.LookupTable = AssignLookupTable(w_arr, 'Rainbow
Blended White')*
# show color bar/color legend
wavelet1Display.SetScalarBarVisibility(renderView1, True)
# reset view to fit data
renderView1.ResetCamera()
#### uncomment the following to render all views
# RenderAllViews()
# alternatively, if you want to write images, you can use
SaveScreenshot(...).
On 03/17/2015 11:46 AM, Scott, W Alan wrote:
Thanks Burlen!
Obviously, my ParaView Python fu is weak. I tried to merge this
code into Python created by the trace recorder, but couldn’t. Say
a person does the following (which is sort of what my customer is
doing) :
·Trace recorder on.
·Wavelet. Apply. Surface. RTData.
·Color Editor/ Presets/ Blue to Red Rainbow.
·Trace Recorder off.
The line setting Blue to Red Rainbow doesn’t get recorded. What
code would I paste in there?
Here is the incorrect trace:
#### import the simple module from the paraview
from paraview.simple import *
#### disable automatic camera reset on 'Show'
paraview.simple._DisableFirstRenderCameraReset()
# create a new 'Wavelet'
wavelet1 = Wavelet()
# get active view
renderView1 = GetActiveViewOrCreate('RenderView')
# uncomment following to set a specific view size
# renderView1.ViewSize = [856, 797]
# show data in view
wavelet1Display = Show(wavelet1, renderView1)
# trace defaults for the display properties.
wavelet1Display.Representation = 'Outline'
wavelet1Display.ColorArrayName = ['POINTS', '']
wavelet1Display.ScalarOpacityUnitDistance = 1.7320508075688779
wavelet1Display.Slice = 10
# reset view to fit data
renderView1.ResetCamera()
# change representation type
wavelet1Display.SetRepresentationType('Surface')
# set scalar coloring
ColorBy(wavelet1Display, ('POINTS', 'RTData'))
# rescale color and/or opacity maps used to include current data range
wavelet1Display.RescaleTransferFunctionToDataRange(True)
# show color bar/color legend
wavelet1Display.SetScalarBarVisibility(renderView1, True)
# get color transfer function/color map for 'RTData'
rTDataLUT = GetColorTransferFunction('RTData')
rTDataLUT.RGBPoints = [37.35310363769531, 0.231373, 0.298039,
0.752941, 112.04112243652344, 0.865003, 0.865003, 0.865003,
186.72914123535156, 0.705882, 0.0156863, 0.14902]
rTDataLUT.ScalarRangeInitialized = 1.0
# get opacity transfer function/opacity map for 'RTData'
rTDataPWF = GetOpacityTransferFunction('RTData')
rTDataPWF.Points = [37.35310363769531, 0.0, 0.5, 0.0,
186.72914123535156, 1.0, 0.5, 0.0]
rTDataPWF.ScalarRangeInitialized = 1
#### saving camera placements for all active views
# current camera placement for renderView1
renderView1.CameraPosition = [0.0, 0.0, 66.92130429902464]
renderView1.CameraParallelScale = 17.320508075688775
#### uncomment the following to render all views
# RenderAllViews()
# alternatively, if you want to write images, you can use
SaveScreenshot(...).
*From:*Burlen Loring [mailto:[email protected]]
*Sent:* Monday, March 16, 2015 4:45 PM
*To:* Scott, W Alan; [email protected]
<mailto:[email protected]>
*Subject:* [EXTERNAL] Re: [Paraview] Trace recorder and presets
(color table)
Hi Alan,
You can use the AssignLookupTable function to reference builtin
lookup tables by name. For example see code between # marks below.
There are a few other conveniences for working with the builtin
tables as well, see this recipe
<http://www.paraview.org/Wiki/ParaView/Python/Lookup_tables>
w = Wavelet()
w_rep = Show(w)
w_rep.Representation = 'Surface'
#
w_rep.ColorArrayName = 'RTData'
w_arr = w.PointData.GetArray('RTData')
w_rep.LookupTable = AssignLookupTable(w_arr, 'Rainbow Blended White')
#
Render().ResetCamera()
Burlen
On 03/16/2015 03:14 PM, Scott, W Alan wrote:
I have a user that needs to change the ParaView preset from
default (cool to warm) to another ParaView preset (Blue to Red
Rainbow). He wants to do this in a python trace. So, he used
the trace recorder to record his steps. Unfortunately,
changing presets is not recorded with the trace recorder.
I have written this issue up as bug number
http://www.paraview.org/Bug/view.php?id=15116, but need to
give the user the code that would have/ should have been
produced. Does anyone have the python code that changes presets?
Thanks all!
Alan
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http://paraview.org/Wiki/ParaView
Search the list archives at: http://markmail.org/search/?q=ParaView
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