<div dir="ltr"><div>I'm not sure of the exact algorithm. I think you'll need to look at the source code for that. The class name is vtkCellDerivatives (<a href="http://www.vtk.org/doc/nightly/html/classvtkCellDerivatives.html">http://www.vtk.org/doc/nightly/html/classvtkCellDerivatives.html</a>).<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Feb 11, 2015 at 2:01 PM, Jean Hertzberg <span dir="ltr"><<a href="mailto:Hertzberg@colorado.edu" target="_blank">Hertzberg@colorado.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="#0563C1" vlink="#954F72" lang="EN-US"><div><p class="MsoNormal">Hi <u></u><u></u></p><p class="MsoNormal">I asked this last week, but got zero response. Please help me, or point me towards the right documentation:<u></u><u></u></p><p class="MsoNormal">Exactly what algorithm is used to calculate vorticity in the Compute Derivatives filter? Is it a first or a second order central difference scheme for gradients, or does it use the circulation method?<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Thanks<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Jean Hertzberg<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Dept. Mechanical Engineering<u></u><u></u></p><p class="MsoNormal">University of Colorado, Boulder<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p></div></div><br>_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the ParaView Wiki at: <a href="http://paraview.org/Wiki/ParaView" target="_blank">http://paraview.org/Wiki/ParaView</a><br>
<br>
Search the list archives at: <a href="http://markmail.org/search/?q=ParaView" target="_blank">http://markmail.org/search/?q=ParaView</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://public.kitware.com/mailman/listinfo/paraview" target="_blank">http://public.kitware.com/mailman/listinfo/paraview</a><br>
<br></blockquote></div><br></div>