[Paraview] Octree Mesh

[Mohammad Mirzadeh]

Hi all,


Thanks so much for your help guys. As far as Ivo noted I tried the extract
cells by region filter and that seems to do the work, only the cells are in
3D - which kinda make sense because my original data is 3D.

As a matter of fact I have been able to import my Octree mesh and data into
Paraview using existing datasets (right now I am using Unstructured) and
other than the problem with slicing, everything else seems to work fine so
right now I think I am not in urgent need of native Octree support.

I also tried looking for filters that can create quad cells, but I couldn't
find it. I would greatly appreciate any help in finding such a filter.

Thanks,
Mohammad

On Thu, Jan 14, 2010 at 4:42 AM, Berk Geveci <berk.geveci at kitware.com>wrote:

> Hi M,
>
> > I am rather new to paraview and I work in the area of CSE. The typical
> > meshes that I use to discretize my PDEs over is the 3D Octree data
> > structure. I was just wondering if anyone is aware of a dedicated dataset
> in
> > paraview to handle such meshes? I can go ahead and export my data in a
> way
> > that can be loaded as an unstructured dataset, but I'd prefer to use a
> > specific dataset for Octrees.
>
> We actually have native support for octree datasets - try Sources ->
> Octree Fractal.
> There has been very little use of this dataset and I found that the
> reader/writer for
> it are not enabled. If you are willing to compile ParaView from
> source, I can make
> the necessary changes to our development version. Let me know.
>
> > One more question. When I use, say, a simple structured 3D mesh and use
> the
> > slice filter to generate the corresponding mesh on a surface(through
> > wireframe) it just shows me some extra diagonal lines on each square
> cell,
> > which it should not.
>
> This is the way the slice filter works - it creates triangles rather
> than quads. I believe
> that there is a filter, somewhere, that generates quads for the case
> of (structured
> data, planar slice). I'll ask the author of that filter its status.
>
> -berk
>
> On Tue, Jan 12, 2010 at 4:00 PM, Mohammad Mirzadeh <mirzadeh at gmail.com>
> wrote:
> > Dear all,
> > I am rather new to paraview and I work in the area of CSE. The typical
> > meshes that I use to discretize my PDEs over is the 3D Octree data
> > structure. I was just wondering if anyone is aware of a dedicated dataset
> in
> > paraview to handle such meshes? I can go ahead and export my data in a
> way
> > that can be loaded as an unstructured dataset, but I'd prefer to use a
> > specific dataset for Octrees.
> > One more question. When I use, say, a simple structured 3D mesh and use
> the
> > slice filter to generate the corresponding mesh on a surface(through
> > wireframe) it just shows me some extra diagonal lines on each square
> cell,
> > which it should not.
> > Any help will greatly be appreciated.
> > Best,
> > -M
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