[Paraview] Gradient between cell data

[Andy Bauer]

Hi,

The gradient of unstructured data sets will work on cell data. Have you
tried that?

Note though that ParaView/VTK only allows fields to be associated with
either points or cells, not interfaces between cells (e.g. faces in 3D and
edges in 2D).

On Thu, Jan 26, 2017 at 8:09 AM, Christoph Grüninger <foss at grueninger.de>
wrote:

> Dear ParaView!
>
> I have a simulation computed with a finite volume method which outputs
> pressure as cell data. The pressure gradient is related to the velocity
> (Darcy's law). Is it possible to calculate the gradient as a finite
> difference between the cell centers of adjacent cells?
> The result would be located between the cells, not sure whether this
> works at all.
>
> Converting cell data to point data and using the gradient filter is not
> what I want.
>
> Bye
> Christoph
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