I'm getting what you expected for gradient of dxdy -- 0 1 0 0 0 0 0 0 0. I'm on 3.14.1 64 bit windows but the results should be the same.<br><br>Andy<br><br><div class="gmail_quote">On Fri, Jun 8, 2012 at 8:46 AM, Felipe Bordeu <span dir="ltr"><<a href="mailto:felipe.bordeu@ec-nantes.fr" target="_blank">felipe.bordeu@ec-nantes.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi,<br>
<br>
I think I did found an inconsistency in the component order in the
compute derivative filter. <br>
<br>
The web page
<a href="http://www.vtk.org/doc/release/4.0/html/classvtkHexahedron.html#a16" target="_blank">http://www.vtk.org/doc/release/4.0/html/classvtkHexahedron.html#a16</a>
said <br>
<br>
Compute derivatives given cell...<br>
On the other hand, if computing derivatives of velocity (vx,vy,vz)
dim=3, 24 values are supplied ((vx,vy,vz)1, (vx,vy,vz)2, ....()8),
and 9 deriv values are returned<b>
((d(vx)/dx),(d(vx)/dy),(d(vx)/dz), (d(vy)/dx),(d(vy)/dy),
(d(vy)/dz), (d(vz)/dx),(d(vz)/dy),(d(vz)/dz)).</b><br>
<br>
I created a simple test to verified the order (file attached), with
9 vectorial fields that after the Compute Derivative will generate a
tensor full of zeros but with one component equal to one.<br>
<br>
for example<br>
If we follow the documentation the field dxdy must generate a tensor
with the terms <br>
0 1 0 0 0 0 0 0 0<br>
<br>
but paraview gives<br>
0 0 0 1 0 0 0 0 0<br>
<br>
can any one confirm this???<br>
<br>
working with paraview 3.14.1 64bit Linux <br>
<br>
Thanks<span class="HOEnZb"><font color="#888888"><br>
<br>
<pre cols="72">--
Felipe Bordeu Weldt
Ingénieur de Recherche
-------------------------------------
Tél. : <a href="tel:33%20%280%292%2040%2037%2016" value="+13302403716" target="_blank">33 (0)2 40 37 16</a> 57
Fax. : <a href="tel:33%20%280%292%2040%2074%2074" value="+13302407474" target="_blank">33 (0)2 40 74 74</a> 06
<a href="mailto:Felipe.Bordeu@ec-nantes.fr" target="_blank">Felipe.Bordeu@ec-nantes.fr</a>
Institut GeM - UMR CNRS 6183
École Centrale Nantes
1 Rue de La Noë, 44321 Nantes, FRANCE
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