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<p class="MsoNormal"><span style="color:#1F497D">Being 1 based shouldn’t matter, it must be point data and not cell data.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">If the particles are a single polyvertex of X points and not 1 point per cell then it might not work.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Try passing the particles through a maskpoints filter if they are a polyvertex and enable single point per vertex or whatever it’s called..<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">JB<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Charles Boivin [mailto:charles.boivin@mayahtt.com]
<br>
<b>Sent:</b> 06 March 2012 19:18<br>
<b>To:</b> Biddiscombe, John A.; paraview@paraview.org<br>
<b>Subject:</b> RE: Help with Particle Pathline filter...<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Thanks for the suggestion.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">It seems to be OK; however, I must correct what I was said before: the ParticleID variable start with a 1 index (not zero). Does that matter?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Should ParticleID be PointData or CellData? Does the way the polys are defined in the file matter here?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Thank you for your help!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Charles<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Biddiscombe, John A.
<a href="mailto:[mailto:biddisco@cscs.ch]">[mailto:biddisco@cscs.ch]</a> <br>
<b>Sent:</b> Tuesday, March 06, 2012 11:31 AM<br>
<b>To:</b> Charles Boivin; <a href="mailto:paraview@paraview.org">paraview@paraview.org</a><br>
<b>Subject:</b> RE: Help with Particle Pathline filter...<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I just tested it on one of my particle datasets and it worked fine. Can you verify that your particle Ids are actually sensible? Use the spreadsheet view to manually inspect them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Also check the max step distance isn’t set very small (but I guess if other settings produce pathlines then it must be ok).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">JB<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:paraview-bounces@paraview.org">paraview-bounces@paraview.org</a> <a href="mailto:[mailto:paraview-bounces@paraview.org]">
[mailto:paraview-bounces@paraview.org]</a> <b>On Behalf Of </b>Charles Boivin<br>
<b>Sent:</b> 06 March 2012 15:57<br>
<b>To:</b> <a href="mailto:paraview@paraview.org">paraview@paraview.org</a><br>
<b>Subject:</b> [Paraview] Help with Particle Pathline filter...<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have a series of particle data files that I have written using the VTK XML PolyData file format (.vtp, I guess). I can use those to display the actual particles just fine with glyphs, but I’d like to also see a pathline
being displayed for particles. I am therefore trying to use the ‘Particle Pathline’ filter.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The particles are simulated in a flow field, where new particles come in and older particles leave the system at every timestep. I therefore also have a ‘point data’ array called “ParticleID” which tags a unique ID to
each particle (starting with a zero index). It is defined as such:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><PointData><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <DataArray type="Int32" Name="ParticleID" NumberOfComponents="1" format="ascii"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> …<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> </DataArray><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">… other arrays…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"></PointData><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When I try to use this array as the “Id Channel Array” in the filter, however, I get no output whatsoever from the filter. I think the rest of the file is correct because the filter DOES generate pathlines when I leave
the “Id Channel Filter” to “Global or Local IDs”, but the paths get messed up as soon as some particles start leaving the domain (as they should, I guess).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What am I doing wrong? Do I need to define this ‘ParticleID’ array differently?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you for your help,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Charles Boivin<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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