[Paraview] Particle tracer

[Mohamad M. Nasr-Azadani]

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 <mmnasr at 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
>
>
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.paraview.org/pipermail/paraview/attachments/20120407/8919ec46/attachment.htm>