For computing vorticity, depending on the grid type you can also use the Gradient of Unstructured Datasets filter. There is an option to compute vorticity for 3 component arrays (i.e. velocity). It works on both point data and cell data and the output will be the same type of field data. I'm about to change this filter so that it will work with all types of VTK grids.<br>
<br>Andy<br><br><div class="gmail_quote">On Thu, Jun 2, 2011 at 12:29 PM, Tim Gallagher <span dir="ltr"><<a href="mailto:tim.gallagher@gatech.edu">tim.gallagher@gatech.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
The output from the ComputeDerivatives is Cell Data. To do those things, you want to make it Point Data with another CellDataToPointData filter.<br>
<br>
The calculator would see it if you changed it from point data to cell data. But since you want to do other stuff with it, add the interpolation filter again and then it will appear with the rest of your point data.<br>
<div class="im"><br>
Tim<br>
<br>
----- Original Message -----<br>
From: "Stephen Wornom" <<a href="mailto:stephen.wornom@inria.fr">stephen.wornom@inria.fr</a>><br>
</div><div><div></div><div class="h5">To: <a href="mailto:gtg085x@mail.gatech.edu">gtg085x@mail.gatech.edu</a><br>
Cc: "ParaView list" <<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>><br>
Sent: Thursday, June 2, 2011 12:26:04 PM<br>
Subject: Re: [Paraview] PV 3.10.1 computing vorticity from vector field<br>
<br>
Tim Gallagher wrote:<br>
> 1. If it's cell centered data, apply the CellDataToPointData filter. If it's point data, skip this step<br>
> 2. Apply the ComputeDerivatives filter. Choose your velocity vector as the Vectors argument, set the Output Vector Type to Vorticity. I usually also set Output Tensor Type to nothing unless you need it.<br>
> 3. Hit apply.<br>
><br>
Works correctly but what must I do to:<br>
1 make a vector or contour plot<br>
2 tracer plot or vorticity lines (like streamlines) plot?<br>
The choice for these is only the velocity field that I read.<br>
Calculator does not see the vorticity vector that was created.<br>
Thanks for you help,<br>
Stephen<br>
> Tim<br>
><br>
> ----- Original Message -----<br>
> From: "Stephen Wornom" <<a href="mailto:stephen.wornom@inria.fr">stephen.wornom@inria.fr</a>><br>
> To: <a href="mailto:paraview@paraview.org">paraview@paraview.org</a><br>
> Sent: Wednesday, June 1, 2011 10:55:12 AM<br>
> Subject: [Paraview] PV 3.10.1 computing vorticity from vector field<br>
><br>
> What are the steps to compute the vorticity vector from the velocity vector?<br>
> Stephen<br>
><br>
><br>
<br>
<br>
--<br>
<a href="mailto:stephen.wornom@inria.fr">stephen.wornom@inria.fr</a><br>
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