[Paraview] Compute Derivatives component order??

[Andy Bauer]

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.

Andy

On Fri, Jun 8, 2012 at 8:46 AM, Felipe Bordeu <felipe.bordeu at ec-nantes.fr>wrote:

>  Hi,
>
> I think I did found an inconsistency in the component order in the compute
> derivative filter.
>
> The web page
> http://www.vtk.org/doc/release/4.0/html/classvtkHexahedron.html#a16 said
>
> Compute derivatives given cell...
>  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* ((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)).*
>
> 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.
>
> for example
> If we follow the documentation the field dxdy must generate a tensor with
> the terms
> 0 1 0  0 0 0 0 0 0
>
> but paraview gives
> 0 0 0 1 0 0 0 0 0
>
> can any one confirm this???
>
> working with paraview 3.14.1 64bit Linux
>
> Thanks
>
> --
>
> Felipe Bordeu Weldt
> Ingénieur de Recherche
> -------------------------------------
> Tél. : 33 (0)2 40 37 16 57
> Fax. : 33 (0)2 40 74 74 06Felipe.Bordeu at ec-nantes.fr
> Institut GeM - UMR CNRS 6183
> École Centrale Nantes
> 1 Rue de La Noë, 44321 Nantes, FRANCE
> -------------------------------------
>
>
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