Leo,<br>Thank you very much. That was the problem.<br><span style="font-family:arial,sans-serif;font-size:12.8px"><br>I am also very happy to see that vtkParticleTracer, vtkParticlePathFilter and vtkStreaklineFilter now have tests in the nightly build (it was not the case for</span><br>
vtkTemporalPathLineFilter in VTK 5.10 release).<br><div class="gmail_extra"><br>Thank you very much for your answers and for the improvements in streamline tracing.<br><br>Best,<br>Dan<br><br><br><br><br><br><div class="gmail_quote">
On Tue, Nov 20, 2012 at 3:17 PM, Yuanxin Liu <span dir="ltr"><<a href="mailto:leo.liu@kitware.com" target="_blank">leo.liu@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
For Pathline/Streakline filters, did you set the TerminationTime parameter? The default is zero. By the way, unlike the ParticleTracer, these two do not work immediately with the animation control. You must explicitly animate the TerminationTime parameter. <div>
<br></div><div>Leo <br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Nov 20, 2012 at 5:43 AM, Dan Lipsa <span dir="ltr"><<a href="mailto:dan.r.lipsa@gmail.com" target="_blank">dan.r.lipsa@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Leo,<br>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).<br>
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.<br>
<p style="margin:0px;text-indent:0px"><span style="font-size:10pt;font-family:'Courier'"><br></span></p><p style="margin:0px;text-indent:0px"><span style="font-size:10pt;font-family:'Courier'">Warning: In /home/utkarsh/Dashboards/MyTests/NightlyMaster/ParaViewSuperbuild-Release/paraview/src/paraview/VTK/Filters/FlowPaths/vtkParticleTracerBase.cxx, line 1372</span></p>
<p style="margin:0px;text-indent:0px"><span style="font-size:10pt;font-family:'Courier'">vtkPParticleTracer (0x6a93c50): Can't go backward</span></p>
<p style="text-indent:0px;font-size:10pt;font-family:'Courier';margin:0px"><br></p><br>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.<br>
<br>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?<span><font color="#888888"><br>
<br>Dan</font></span><div><div><br><br>
<div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 19, 2012 at 9:06 PM, Yuanxin Liu <span dir="ltr"><<a href="mailto:leo.liu@kitware.com" target="_blank">leo.liu@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">Yes. Please try to put the source at the high velocity region. You can also use the calculator filter to increase the velocity.</span><div>
<span style="font-family:arial,sans-serif;font-size:12.800000190734863px"><br>
</span></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">Unlike the previous ParaView, you don't attach another filter after ParticleTracer to get path lines/streak lines. Just use </span><font face="arial, sans-serif">ParticlePath filter</font><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"> / </span><font face="arial, sans-serif">StreakLine filter.</font><span style="font-size:12.800000190734863px;font-family:arial,sans-serif"> You can find a summary these features on page of 11 the </span><a href="http://www.kitware.com/media/thesource/jul2012.html" style="font-size:12.800000190734863px;font-family:arial,sans-serif" target="_blank">Kitware Source July issue</a><span style="font-size:12.800000190734863px;font-family:arial,sans-serif">. </span></div>
<div><span style="font-size:12.800000190734863px;font-family:arial,sans-serif"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">Leo </span></div>
<div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"> have recently made a number of changes to the </span><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">particle</span><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"> tracing. You can find a summary on page of 11 the </span><a href="http://www.kitware.com/media/thesource/jul2012.html" style="font-family:arial,sans-serif;font-size:12.800000190734863px" target="_blank">Kitware Source July issue</a><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">.</span><div style="font-family:arial,sans-serif;font-size:12.800000190734863px">
</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div>On Mon, Nov 19, 2012 at 3:47 PM, Dan Lipsa <span dir="ltr"><<a href="mailto:dan.r.lipsa@gmail.com" target="_blank">dan.r.lipsa@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><br><br><div class="gmail_quote"><div>---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Dan Lipsa</b> <span dir="ltr"><<a href="mailto:dan.r.lipsa@gmail.com" target="_blank">dan.r.lipsa@gmail.com</a>></span><br>
Date: Mon, Nov 19, 2012 at 8:47 PM<br>Subject: Re: [Paraview] Particle tracer<br>To: Yuanxin Liu <<a href="mailto:leo.liu@kitware.com" target="_blank">leo.liu@kitware.com</a>><br><br><br></div><div><div>
Yuanxin,<div>Thanks for your reply,</div>
<div>
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?</div>
<div><br></div><div>Thank you,</div><div>Dan</div><div><div><div><br></div><div><br></div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 19, 2012 at 6:43 PM, Yuanxin Liu <span dir="ltr"><<a href="mailto:leo.liu@kitware.com" target="_blank">leo.liu@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">The particle tracer works with the animation time. What happens when you press "play" in the animation control?<div>
<br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Mon, Nov 19, 2012 at 12:31 PM, Dan Lipsa <span dir="ltr"><<a href="mailto:dan.r.lipsa@gmail.com" target="_blank">dan.r.lipsa@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>Hi all,<br>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.<br>
<br><a href="http://www.paraview.org/pipermail/paraview/2012-April/024587.html" target="_blank">http://www.paraview.org/pipermail/paraview/2012-April/024587.html</a><br>
<br>I execute the following steps:<br>1. add the temporal, regular dataset (list of vti files)<br>2. add a line source for seeds<br>3. add a ParticleTracer filter with input my regular vector data and seeds generated by the line.<br>
<br>I only see the starting points, no tracing occurs.<br><br>Any help would be greatly appreciated.<span><font color="#888888"><br><br>Dan<br><br>
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