[Paraview] Interpolate data from an unstructured mesh to a structured one

[Sebastien Jourdain]

Hi Gena,

you can also use "Resample with dataset". The only missing part will
be your destination dataset that you want to use for sampling your
original data.
You can look at that documentation to create an empty one manually by
creating a legacy VTK file.
http://www.vtk.org/VTK/img/file-formats.pdf
I've paste the content of a rectilinear one below. You will just need
to tweak some parameters.

Seb

===== Your sampling dataset could look like that file: probe.vtk =====

# vtk DataFile Version 3.0
vtk output
ASCII
DATASET STRUCTURED_POINTS
DIMENSIONS 11 11 11
SPACING 0.004 0.004 0.012
ORIGIN -0.02 -0.02 -0.06

On Tue, Nov 1, 2011 at 3:57 AM, Gena Bug <archaerolog at mail.ru> wrote:
> Hello, Robert!
>
> Thank you for quick response! Seems, this plugin is what I'm looking for. But can you
> explain me how can I compile it? I can't find any readme in the repository and I don't have
> enough experience with building paraview plugins. My platform is Debian testing amd64.
>
> -----|-
> Gena.
>
> On Mon October 31 2011 19:54:25 Robert Maynard wrote:
>> You might be interested in the code at:
>> https://github.com/berkgeveci/ComparativeVis
>>
>> It has a filter called Cross Mesh Field Evaluation which maps a
>> property from a unstructured mesh
>> onto a structured mesh in parallel.
>>
>> On Mon, Oct 31, 2011 at 10:48 AM, Gena Bug <archaerolog at mail.ru> wrote:
>> > Hello!
>> >
>> > I have an interesting task -- I need to move the cell data from an
>> > unstructured mesh to corresponding cartesian mesh. Original domain is an
>> > alpha-degree 3D sector (alpha is a parameter, sector' angle, may be
>> > pi/3, pi/4, ...) with periodic side boundaries and unstructured
>> > discretization (hexahedral and wedge cells). The target domain is a cube
>> > that contains the whole cylinder (sum of N sectors: N*alpha = 2*pi). And
>> > my task is to generate cartezian mesh in the target domain (cube) and
>> > interpolate data from the original mesh to the cartezian.
>> >
>> > I'm almost sure about answer, but I must ask: is there a combination of
>> > filters that can do the trick?
>> >
>> > I think to write a python script that can do this, but I don't know how
>> > to: a) create a cartezian mesh and
>> > b) iterate throw mesh cells and their nodes.
>> >
>> > ----|-
>> > Gena.
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