[Paraview] Fwd: Particle tracer

[Dan Lipsa]

Leo,
Thanks for the suggestion with the calculator filter. I was able to use it
to increase the velocity and see the particles moving as they should
(ParticleTracer).
Just a small note here, I see an warning when I use the First Frame (0)
button. The warning does not seem to have any ill effects however.


Warning: In
/home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Filters/FlowPaths/vtkParticleTracerBase.cxx,
line 1372

vtkPParticleTracer (0x6a93c50): Can't go backward



I still had no luck with the ParticlePath filter. I follow the same steps
as for the ParticleTracer but the Information box shows me 'Number of
Cells': 0 and 'Number of Points': 7 and no points or traces are displayed.
Do you have any suggestions on what might be wrong with the ParticlePath
filter.

For the StreakLine filter the number of cells is 7 and number of points is
7 which seems correct. However no tracing of streaklines happens either.
Paraview goes very fast through the time steps when I press the Play button
(the same as for the ParticlePath filter). Do you have any suggestions for
the StreakLine filter?

Dan



On Mon, Nov 19, 2012 at 9:06 PM, Yuanxin Liu <leo.liu at kitware.com> wrote:

> Yes. Please try to put the source at the high velocity region.  You can
> also use the calculator filter to increase the velocity.
>
> Unlike the previous ParaView,  you don't attach another filter after
> ParticleTracer to get path lines/streak lines.  Just use ParticlePath
> filter / StreakLine filter.  You can find a summary these features on
> page of 11 the Kitware Source July issue<http://www.kitware.com/media/thesource/jul2012.html>.
>
>
>
> Leo
>
>  have recently made a number of changes to the particle tracing.  You can
> find a summary on page of 11 the Kitware Source July issue<http://www.kitware.com/media/thesource/jul2012.html>
> .
>
>
>
> On Mon, Nov 19, 2012 at 3:47 PM, Dan Lipsa <dan.r.lipsa at gmail.com> wrote:
>
>>
>>
>> ---------- Forwarded message ----------
>> From: Dan Lipsa <dan.r.lipsa at gmail.com>
>> Date: Mon, Nov 19, 2012 at 8:47 PM
>> Subject: Re: [Paraview] Particle tracer
>> To: Yuanxin Liu <leo.liu at kitware.com>
>>
>>
>> Yuanxin,
>> Thanks for your reply,
>>  When I press play, the particles seem to stay in the same place.
>>  However, they do change color as they are colored by velocity magnitude.
>> Maybe the velocity is very small and the particles don't move much - I
>> trace only 43 time steps. I will try to trace the particles in an region of
>> higher velocity tomorrow (is night here in UK). Do I need to apply another
>> filter to get a pathline?
>>
>> Thank you,
>> Dan
>>
>>
>>
>>
>>
>> On Mon, Nov 19, 2012 at 6:43 PM, Yuanxin Liu <leo.liu at kitware.com> wrote:
>>
>>> The particle tracer works with the animation time.  What happens when
>>> you press "play" in the animation control?
>>>
>>>
>>>
>>> On Mon, Nov 19, 2012 at 12:31 PM, Dan Lipsa <dan.r.lipsa at gmail.com>wrote:
>>>
>>>> Hi all,
>>>> I have found this thread after I tried unsuccessfully to trace
>>>> pathlines from a list of vti files using paraview 3.98.0-RC1-2-ge3fcf70
>>>> 64-bit on Linux.
>>>>
>>>> http://www.paraview.org/pipermail/paraview/2012-April/024587.html
>>>>
>>>> I execute the following steps:
>>>> 1. add the temporal, regular dataset (list of vti files)
>>>> 2. add a line source for seeds
>>>> 3. add a ParticleTracer filter with input my regular vector data and
>>>> seeds generated by the line.
>>>>
>>>> I only see the starting points, no tracing occurs.
>>>>
>>>> Any help would be greatly appreciated.
>>>>
>>>> Dan
>>>>
>>>>
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>>>
>>
>>
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