[Paraview] find minimum on a slice using interpolated values

[Caffagni, Andrea]

Thank you Mathieu for your suggestion,
But if I understand correctly with this method I’m able to find only the value on the mesh points.
Thus, if I change the mesh with finer or coarser elements the value and the location that I can find change.
I would like to avoid this behavior, for this reason I would get the minimum value using the interpolated value on the slice.
do you think it's possible to do it? can I manage this with a programmable filter (work from script without gui)?

Best Regards,
Andrea

From: Mathieu Westphal [mailto:mathieu.westphal at kitware.com]
Sent: Thursday, May 03, 2018 09:07
To: Caffagni, Andrea
Cc: paraview at public.kitware.com
Subject: Re: [Paraview] find minimum on a slice using interpolated values

Hi Andrea,
If your are using ParaView, you can obtain this information quite easilly by showing your dataset in a Spreadsheet view and orderinng the data by "Pressure".

Best,

Mathieu Westphal

On Wed, May 2, 2018 at 8:57 PM, Caffagni, Andrea <Andrea.Caffagni at ferrari.com<mailto:Andrea.Caffagni at ferrari.com>> wrote:
Dear users,
I need to find the absolute minimum value on a slice of a certain scalar (like pressure).
I would get this point using the interpolation in order to avoid the ‘sensitivity’ to the mesh (in this way, theoretically, if I change the mesh the minimum should always remain at the same point).
For this point I would like to get the three-dimensional position and the value of the scalar in question (pressure and/or velocity), maybe I can use the numpy functions in a programmable filter?

https://docs.scipy.org/doc/numpy-1.14.0/reference/generated/numpy.amin.html

But I have not idea of how use the interpolation…

Thanks for the suggestions,
Andrea

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