<div dir="ltr">Yes, the change is already merged in VTK. It'll make it to ParaView soon.<div><br></div><div>Utkarsh</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Jul 15, 2015 at 12:38 PM Scott, W Alan <<a href="mailto:wascott@sandia.gov">wascott@sandia.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Are you going to get the patch into the next release?<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Alan<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Utkarsh Ayachit [mailto:<a href="mailto:utkarsh.ayachit@kitware.com" target="_blank">utkarsh.ayachit@kitware.com</a>]
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<b>Sent:</b> Wednesday, July 15, 2015 9:06 AM<br>
<b>To:</b> Scott, W Alan; <a href="mailto:paraview@paraview.org" target="_blank">paraview@paraview.org</a><br>
<b>Subject:</b> [EXTERNAL] Re: [Paraview] Plot cumulative integral over time of a variable<u></u><u></u></span></p></div></div><div lang="EN-US" link="blue" vlink="purple"><div>
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<p class="MsoNormal" style="margin-left:.5in">Alan,<u></u><u></u></p>
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Attached is a state file (using can.ex2) which indeed uses numpy.trapz() to do the work. It needs a small patch to be applied to VTK (attached) to avoid a segfault.<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:.5in">The Programmable Filter adds a new row-data array named "trapz" which is the result of the operation (it's repeated so we can add it to RowData rather than field data.<u></u><u></u></p>
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Utkarsh<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:.5in">On Tue, Jul 14, 2015 at 7:23 PM Scott, W Alan <<a href="mailto:wascott@sandia.gov" target="_blank">wascott@sandia.gov</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Question from a user:<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I would like to use paraview to do the following:<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">1) Integrate a nodal variable over a volume (IntegrateVariables filter does this)<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">2) Then, integrate the result of the volume integral over time (cumulative integral)<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">The "IntegrateVariables" filter works just fine to integrate over the volume, and I can plot the results of it over time by selecting "RowData" from
the "PlotSelectionOverTime" filter. I just can't figure out how to do #2 - integrate these results over time with something like "numpy.trapz" or "scipy.integrate.cumtrapz".<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I feel like this has probably been asked a million times, but I still seem to have trouble with it. I think I usually fall back to other post processing
tools. Can this be done all in Paraview?<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Thanks,<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Alan<u></u><u></u></span></p>
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