[Paraview] Problem to compute the gradient of a scalar field

[Andy Bauer]

Hi,

It looks like gradients aren't getting  computed properly for quadratic
triangles. A quick work around is to use the tesselate filter to subdivide
the quadratic triangles while converting them to linear triangles. The
gradient of unstructured data filter should work after that. I'll add in a
bug report to see about getting this fixed as well.

Best,
Andy

On Thu, Jul 14, 2016 at 5:23 PM, Stéphane Dellacherie <
stephane.dellacherie at polymtl.ca> wrote:

> Dear Colleague,
>
> I am trying to use the fielter GradientOfUnstructuredDataSet on the field
> T which is in the vtk file example.vtk (see the joined file). Nevertheless,
> I only obtain a NULL gradient (see the file tutu.png) although the T field
> is not a constant scalar field.
>
> Is it normal ?
>
> Thank you for your help !
>
> With my best regards.
>
> Stéphane
>
> --
> ___________________________________________________________
>
> Stéphane Dellacherie
>
> CEA Paris-Saclay / Direction de l’Énergie Nucléaire
>
> École Polytechnique de Montréal / Dpt de Génie Mécanique
>
> Tél. : (001) 514.340.47.11 (#2488)
> ___________________________________________________________
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