[Paraview] Octree Mesh

[Berk Geveci]

> 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

Sorry for the misunderstanding. That filter is not in ParaView. I will inquire
if it is mature enough to put in ParaView.

On Thu, Jan 14, 2010 at 10:22 PM, Mohammad Mirzadeh <mirzadeh at gmail.com> wrote:
> 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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