[Paraview] Data structure type

[Joachim Pouderoux]

Hi,

For information, by the end of the year or in the beginning of 2017 we will
introduce into VTK & ParaView a new data structure to represent this kind
of regular grid with non implicit cell geometry. For now, as Kenneth said,
you must pay the price of using an Unstructured Grid to represent it.

Best,

*Joachim Pouderoux*, PhD

*Technical Expert - Scientific Computing Team*
*Kitware SAS <http://www.kitware.fr>*


2016-10-28 19:48 GMT-04:00 Moreland, Kenneth <kmorel at sandia.gov>:

> Chris,
>
>
>
> Ultimately to represent your data in the way you describe, you will need
> to store it in an unstructured grid. Even though your data are regular in
> the X and Y directions, the structured data types will insist on connecting
> the points of the cells, which you explicitly stated that you do not want.
> The unstructured grid does not have this restriction. Although it can (and
> usually does) share points across cells, it does not have to.
>
>
>
> -Ken
>
>
>
> *From: *ParaView <paraview-bounces at paraview.org> on behalf of Christian
> Gabriel <cgabriel at matrix-solutions.com>
> *Date: *Friday, October 28, 2016 at 6:06 AM
> *To: *"paraview at paraview.org" <paraview at paraview.org>
> *Subject: *[EXTERNAL] Re: [Paraview] Data structure type
>
>
>
> Thanks Dave, I’ll take a closer look.
>
> I think I’m still a little confused about cell based data versus node
> based data at the top and bottom of the cell ….
>
>
>
> I found this which was generated with Paraview, so I know it can be done J
>
>
>
> [image: id:image001.jpg at 01D230F1.D9A2EA70]
>
>
>
>
>
>
>
>
>
> *From:* David E DeMarle [mailto:dave.demarle at kitware.com]
> *Sent:* October-28-16 7:32 AM
> *To:* Christian Gabriel
> *Cc:* paraview at paraview.org
> *Subject:* Re: [Paraview] Data structure type
>
>
>
> Try vtkStructuredGrid and the Cell Data to Point Data filter.
>
> hth
>
>
>
> On Oct 27, 2016 9:30 PM, "Christian Gabriel" <
> cgabriel at matrix-solutions.com> wrote:
>
> Good day.
>
>
>
> I’m looking into Paraview for 3D visualisation of modelling results from
> an integrated surface water/groundwater model.
>
>
>
> The model domain is discretized as a uniform rectilinear grid;
> calculations are performed for the grid centroids.
>
> However, the vertical extent of a grid cell is described by a top and
> bottom elevation, constant over the cell.
>
> This results in a staggered arrangement of cells (kinda like Lego blocks)
> in cross-section view:
>
>
>
> *NOT:*
>
>
>
>
>
> I’m wondering what data type/structure I would use for this kind of data?
>
>
>
> Also, is there an easy way/filter in Paraview to re-project/interpolate
> the centre based (const) elevation data to the corners/nodes of the uniform
> rectilinear “horizontal” grid, which would allow for a display as shown on
> the right (instead of staggered)?
>
>
>
> Thanks a lot,
>
>
>
> Chris
>
>
>
>
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