Hi Mohamad,
I've been quietly following this thread in hopes that your interest in
particle tracing will spark a response from the developers. I was unable
to generate pathlines in image data in vti format I beleive I was using
3.10.0 at the time. It was not clear to me if there was a bug or if I
had the pipeline built incorrectly out of my own ignorance on how this
works in PV. I posted a question with test data hoping for some advise,
http://paraview.markmail.org/message/ek67niwr7xagaajz?q=burlen+order:date-backward&page=15
however I did not receive any reply.
Burlen
On 04/07/2012 05:28 AM, Mohamad M. Nasr-Azadani wrote:
I apologize for some mistakes.
The Powerpoint I was refering to can be found here.
*paraview*.org/Wiki/images/2/20/IEEE08_*Time-In-ParaView*.ppt
Best,
Mohamad
On Sat, Apr 7, 2012 at 5:22 AM, Mohamad M. Nasr-Azadani
<mmn...@gmail.com <mailto:mmn...@gmail.com>> wrote:
Hi all,
This is what I doing:
1- Load the PVD file (which holds the real time information
associated with each *.vtr file)
<?xml version="1.0"?>
<VTKFile type="Collection" version="0.1" byte_order="LittleEndian"
compressor="vtkZLibDataCompressor">
<Collection>
<DataSet timestep="0.0" group="" part="0" file="vel_vec_0.vtr"/>
<DataSet timestep="0.2" group="" part="0" file="vel_vec_1.vtr"/>
<DataSet timestep="0.4" group="" part="0" file="vel_vec_2.vtr"/>
<DataSet timestep="0.6" group="" part="0" file="vel_vec_3.vtr"/>
<DataSet timestep="0.8" group="" part="0" file="vel_vec_4.vtr"/>
<DataSet timestep="1.0" group="" part="0" file="vel_vec_5.vtr"/>
<DataSet timestep="1.2" group="" part="0" file="vel_vec_6.vtr"/>
<DataSet timestep="1.4" group="" part="0" file="vel_vec_7.vtr"/>
<DataSet timestep="1.6" group="" part="0" file="vel_vec_8.vtr"/>
<DataSet timestep="1.8" group="" part="0" file="vel_vec_9.vtr"/>
<DataSet timestep="2.0" group="" part="0" file="vel_vec_10.vtr"/>
</Collection>
</VTKFile>
2- Click on my data and create a "Temporal Cache" with "Cache
Size=2".
3- From "Sources", I create a "Line".
4- Click on TemporalCache1 and create a ParticleTracer.
When the menu pops up, I choose
a) Input: TemporalCache1
b) Source: Line1
Right after I click Ok, this is the message I get (note that
this message is shown even before giving me the chance to change
any flags on the "Properties" section related to the
"ParticleTracer1".
/home/utkarsh/Kitware/superbuild/paraview/src/paraview/VTK/Filtering/vtkStreamingDemandDrivenPipeline.cxx,
line 934
vtkPVPostFilterExecutive (0x4db4870): No maximum number of pieces
has been set in the information for output port 0 on algorithm
vtkPVPostFilter(0x4777fd0).
Luckily, Paraview does not crash and I can continue.
After doing some research, I am guessing that this has something
to do with the time conflicts (Pipeline fed into the filter and
the animation viewer time).
*Observation:* Right after I create the ParticleTracer and receive
the error message, the time shown in the animation viewer is
increased from "0.0" to "0.2". Why?
5- Recommended by the powerpoint, I set
a) Time Step: True (1)
b) Ignore Pipeline Time: True (1)
6- Now, I use "Animation View" as directed by the same powerpoint
to feed the time into the ParticleTracer1 filter.
a) Mode: Sequence
b) Create a keyframe for "ParticleTracer1". Double click
on the bar and set:
1: time: 0.2, (interpolation ramp), value: 1
2: time: 1.8, (), value: 9
Note: I have varied all the combinations listed above to
include/exclude the last/first steps. No luck! Nothing really
happening.
7- Play animation. Result: nothing happening? What is going on?
*Observation: Using Paraview 3.8, I could see the animation
without adjusting any parameters in the "Animation View" menu.
Just the annoying error message was shown. However, I could do the
same thing with Paraview 3.14, but it crashes after a few timesteps. *
*
*
Anybody could share some hints on how to go about this?
Thanks,
Mohanad
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