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<div>(Responding back to the mailing list so everyone can see the answers.)</div>
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<div>If I understand your response correctly, your data is a collection of particles. ParaView cannot immediately create streamlines from these data because most of volume is empty space. I assume you have velocity for the particles, but everything that is
not exactly on a particle has an undefined velocity.</div>
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<div>You could estimate the velocity everywhere by imposing a mesh on top of the particles. The most straightforward way to do this is to run the Delaunay 3D filter.</div>
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<div>I have to say, though, I'm still confused about why you want to do this. You are asking ParaView to estimate the velocity field and then estimate a particle advection on that velocity field. That sounds extremely inaccurate compared to particles the simulation
as advected in the first place. I would expect the pathlines filter to give a much better representation of the flow.</div>
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<div>-Ken</div>
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<span style="font-weight:bold">From: </span>Maryam <<a href="mailto:maryam.azarpira@yahoo.com">maryam.azarpira@yahoo.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, May 14, 2014 4:29 PM<br>
<span style="font-weight:bold">To: </span>Kenneth Moreland <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles<br>
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<div><span style="-webkit-text-size-adjust: auto;">Yes, i have the 3D </span><span style="background-color: rgba(255, 255, 255, 0); -webkit-text-size-adjust: auto; font-style: inherit; font-variant: inherit;">cylindrical fluid that have been modeled with lagrangian
particles. And the data format is VTK.</span><span style="-webkit-text-size-adjust: auto;"><br>
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<span style="-webkit-text-size-adjust: auto;">Sent from my iPad</span></div>
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On May 15, 2014, at 2:48 AM, "Moreland, Kenneth" <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>> wrote:<br>
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<div>I'm definitely missing something, because making streamlines on a vector field should just work. Can you describe your data? For example, do you have a volume made up of 3D cells? Do you have a bunch of particles moving around in space?</div>
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<div>-Ken</div>
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<span style="font-weight:bold">From: </span>Maryam <<a href="mailto:maryam.azarpira@yahoo.com">maryam.azarpira@yahoo.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, May 14, 2014 4:05 PM<br>
<span style="font-weight:bold">To: </span>Kenneth Moreland <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles<br>
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<div>Yes, i want the stream tracer but when i apply this filter or particle tracer filter they do not work.<br>
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Sent from my iPad</div>
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On May 15, 2014, at 2:27 AM, "Moreland, Kenneth" <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>> wrote:<br>
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<div>I don't understand what you mean by that. If you mean you want the streamlines that treat the vector field as a static field at a particular time step, use the Stream Tracer filter. It's on the common filters toolbar. If you mean you want the traced streams
up to that point, then step your current setup with the Temporal Particles ToPathlines filter to the step you want.</div>
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<div>-Ken</div>
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<span style="font-weight:bold">From: </span>Maryam <<a href="mailto:maryam.azarpira@googlemail.com">maryam.azarpira@googlemail.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, May 14, 2014 3:53 PM<br>
<span style="font-weight:bold">To: </span>Kenneth Moreland <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles<br>
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<div>Thanks for reply ken</div>
<div>But i want to have the streamline in a certain time step.<br>
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Sent from my iPad</div>
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On May 15, 2014, at 2:16 AM, "Moreland, Kenneth" <<a href="mailto:kmorel@sandia.gov">kmorel@sandia.gov</a>> wrote:<br>
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<div>Attach the Temporal Particles To Pathlines filter to the output of the Particle Tracer.</div>
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<div>-Ken</div>
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<span style="font-weight:bold">From: </span>Maryam <<a href="mailto:maryam.azarpira@yahoo.com">maryam.azarpira@yahoo.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>Maryam <<a href="mailto:maryam.azarpira@yahoo.com">maryam.azarpira@yahoo.com</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday, May 14, 2014 3:32 PM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>" <<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] [Paraview] generate streamlines of lagrangian particles<br>
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<div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt">
<div class="" style=""><font face="tahoma,sans-serif" style="color: rgb(34, 34, 34); font-size: 13px;" class=""><span style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">hi all, </span><br style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">
<br style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">
<span style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">does somebody know how to generate streamlines of lagrangian particles? </span></font></div>
<div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;" class="">
<pre style="color: rgb(0, 0, 0);" class=""><font face="tahoma,sans-serif" class="" style="">I execute the following steps:
1. add the temporal cache filter
2. add a line source for seeds
3. add a ParticleTracer filter
I only see the starting points, no tracing occurs.</font></pre>
<div class="" style=""><font face="tahoma,sans-serif" class="" style=""><br style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">
<span style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">thanx al</span></font></div>
<div class="" style=""><font face="tahoma,sans-serif" class="" style=""><span style="color: rgb(0, 0, 0); background-color: rgb(247, 247, 247);" class="">Maryam</span></font></div>
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