[vtkusers] Any more for Particle/Meshless formats

Fri Jun 15 18:43:50 EDT 2012

I prefer H5Part based data over VTK files for particles.
https://hpcforge.org/scm/browser.php?group_id=14
Browse tree and see vtkH5PartReader and vtkH5PartWriter.
see wiki link on top right of page and also google H5Part for some other info.

JB

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of Andrew Parker
Sent: 15 June 2012 15:00
To: Lubos Brieda
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] Any more for Particle/Meshless formats

Ok thanks for that, just looking to get as many people's views as possible - be interesting to see what others say....

Cheers,
Andy
On 15 June 2012 13:55, Lubos Brieda <lbrieda at yahoo.com<mailto:lbrieda at yahoo.com>> wrote:
Andy, I second George's response below. I have used the same approach when developing a VTK-based visualization program capVTE which was used to visualize animated rarefied gas / plasma simulation flows. It worked fine.

________________________________
From: Andrew Parker <andy.john.parker at googlemail.com<mailto:andy.john.parker at googlemail.com>>
To: George Zagaris <george.zagaris at kitware.com<mailto:george.zagaris at kitware.com>>
Cc: vtkusers at vtk.org<mailto:vtkusers at vtk.org>
Sent: Friday, June 15, 2012 8:52 AM
Subject: Re: [vtkusers] Any more for Particle/Meshless formats

Hi,

Just wanted to see if there were any more comments/input into the best way to read and write particle/meshless based formats for vtk and then subsequently paraview?

Anybody who has used vtk/paraview for lagrangian/SPH/DEM etc type approaches please feel free to chime-in indicating the best approach for constantly updating node positions, no associated connectivity, and unsteady data associated with those nodes as a function of space and time.

Questions are:  Which vtk file format and mesh format for the above.

Cheers again,
Andy
On 14 June 2012 16:34, George Zagaris <george.zagaris at kitware.com<mailto:george.zagaris at kitware.com>> wrote:
Yes, you are right. In what I described, you would need a file for
each time-step. I don't know of an already implemented reader/writer
that would allow you to store multiple time-steps in a single file. I
cc'ed the list in case someone else has more ideas on this.

Best,
George

On Thu, Jun 14, 2012 at 11:19 AM, Andrew Parker
<andy.john.parker at googlemail.com<mailto:andy.john.parker at googlemail.com>> wrote:
> Hi,
>
> Thanks for that, I had this as my first idea but I'm right in thinking that
> would require one file for every new position of particles?  Is there no way
> to have that file store multiple position each associated with a time step
> all in one file?  I'm guessing that's not a vtkUnstructuredGrid??  Is there
> such a file?
>
> Cheers,
> Andy
>
>
> On 14 June 2012 15:59, George Zagaris <george.zagaris at kitware.com<mailto:george.zagaris at kitware.com>> wrote:
>>
>> One possibility is to store the particles in a vtkUnstructuredGrid
>> where each cell is a VTK_VERTEX or you could have a single cell that
>> is of type VTK_POLY_VERTEX. Then, you can attach PointData (vectors or
>> scalars, etc.) as normal and read/write *.vtu files.
>>
>> Best,
>> George
>>
>> On Thu, Jun 14, 2012 at 5:31 AM, Andrew Parker
>> <andy.john.parker at googlemail.com<mailto:andy.john.parker at googlemail.com>> wrote:
>> > Hi,
>> >
>> > Could I ask for a bit of help.  I'd like to visualise particle based
>> > flows.
>> >  My requirements are to be able to write(and read) a  vtk style file
>> > that
>> > paraview and read and animate.  I would like the file to have scalar and
>> > or
>> > vectors associated with each particle, there to be a relevant time step
>> > per
>> > "slot" in the file, and that each time step the particle positions are
>> > updated and hence move.  I would like an animation to show the particles
>> > moving, as a function of the new positions in the file, and not
>> > inspecting a
>> > vector field in the file and integrating to determine a new position.
>> >
>> > Any help really appreciated,
>> >
>> > Cheers again,
>> > Andy
>> >
>> > _______________________________________________
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>
>
>
>
> --
>
> __________________________________
>
>    Dr Andrew Parker
>
>    Em at il:  andrew.parker at cantab.net<mailto:andrew.parker at cantab.net>
>
>

--
__________________________________
   Dr Andrew Parker
   Em at il<mailto:Em at il>:  andrew.parker at cantab.net<mailto:andrew.parker at cantab.net>

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