[Paraview] Resampling to a uniform grid

[Moreland, Kenneth]

I stand corrected then.

From: Andy Bauer <andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>>
Date: Thursday, July 10, 2014 10:43 AM
To: Kenneth Moreland <kmorel at sandia.gov<mailto:kmorel at sandia.gov>>
Cc: David E DeMarle <dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>>, "Kares, Robert J. (LANL)" <rjk at lanl.gov<mailto:rjk at lanl.gov>>, "paraview at paraview.org<mailto:paraview at paraview.org>" <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: [EXTERNAL] Re: [Paraview] Resampling to a uniform grid

The resample to data set filter does work in parallel but the result will only be on process 0. Each process sends its values to process 0 so this is not an algorithm that will scale well.

Regards,
Andy


On Thu, Jul 10, 2014 at 11:31 AM, Moreland, Kenneth <kmorel at sandia.gov<mailto:kmorel at sandia.gov>> wrote:
Note that this will only work when running in serial. I'm sure that in parallel this will not sample correctly. That would require communication to resolve uneven distributions in the unstructured grid. I don't think anyone has written something like that yet.

-Ken

From: David E DeMarle <dave.demarle at kitware.com<mailto:dave.demarle at kitware.com>>
Date: Thursday, July 10, 2014 7:17 AM
To: "Kares, Robert J. (LANL)" <rjk at lanl.gov<mailto:rjk at lanl.gov>>
Cc: "paraview at paraview.org<mailto:paraview at paraview.org>" <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: [EXTERNAL] Re: [Paraview] Resampling to a uniform grid

You could start with Sources->Wavelet and reposition it as needed, but I'ld use a python programmable source. Attached is a state file to demonstrate.


David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909<tel:518-881-4909>


On Wed, Jul 9, 2014 at 6:06 PM, Kares, Robert J <rjk at lanl.gov<mailto:rjk at lanl.gov>> wrote:
Folks,

I would like to resample a scalar field defined on an unstructured
grid in 3D onto a uniform rectangular 3D grid with specified logical and
physical dimensions.

It seems from the ParaView filters documentation that this can
somehow be done using the Resample With Dataset filter. It appears
to me that the procedure involves generating a uniform rectangular
grid in some fashion and then feeding it to the Resample With Dataset
filter along with the unstructured grid containing the scalar to be
resampled.

However, I am confused about just how to make the rectangular grid of
specified size in the first place and about how to use it with the Resample With Dataset
filter.

Could someone explain to me how to do this ?

Thanks,

                                       --Bob



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