When I look at a cross section of the domain using "plot over line", places where the gradient should be negative, it is always positive. In addition, the label for the color bar says "Gradient Magnitude" even though that is not the filter I selected.<br>
<br>Alessandro <br><br><div class="gmail_quote">On Sat, Jun 28, 2008 at 4:03 PM, Berk Geveci <<a href="mailto:berk.geveci@kitware.com">berk.geveci@kitware.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
How do you know it is giving you just the magnitude? Are you trying to<br>
color by it? The filter produces a gradient vector so you should be<br>
able to access individual components of the vector.<br>
<br>
-berk<br>
<div><div></div><div class="Wj3C7c"><br>
On Sat, Jun 28, 2008 at 8:00 AM, Alessandro A. Bellina <<a href="mailto:bellina@uiuc.edu">bellina@uiuc.edu</a>> wrote:<br>
> Hello All,<br>
> I am trying to get the gradient of a scalar field that is stored in an<br>
> unstructured grid. This is time-dependent data grouped using a PVD file.<br>
> When I add the Gradient (Unstructured) filter, it only gives me the<br>
> magnitude of the gradient. I need to get just the gradient. Has anybody run<br>
> into this issue?<br>
><br>
> Thank you,<br>
><br>
> Alessandro<br>
><br>
> --<br>
> Alessandro A. Bellina<br>
><br>
> Graduate Student<br>
> Bioacoustics Research Laboratory<br>
> Electrical and Computer Engineering<br>
> University of Illinois at Urbana-Champaign<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Alessandro A. Bellina<br><br>Graduate Student<br>Bioacoustics Research Laboratory<br>Electrical and Computer Engineering<br>University of Illinois at Urbana-Champaign