[Paraview] Octree Mesh

[Mohammad Mirzadeh]

Well I guess you said something like this,

> 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.

So I thought there is such a filter already in paraview

On Thu, Jan 14, 2010 at 7:15 PM, Berk Geveci <berk.geveci at kitware.com>wrote:

> > 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.
>
> I am not sure what you mean by this.
>
> -berk
>
> On Thu, Jan 14, 2010 at 1:40 PM, Mohammad Mirzadeh <mirzadeh at gmail.com>
> wrote:
> > 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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