[Paraview] File formats for particle visualization

[Scott, W Alan]

Ken,
Why not use a VTK format for particle support?  Lack of direct time support?  Or, would it be that other programs cannot read it?

Anyone know if VisIt can read current VTK file formats?

Alan

________________________________
From: Zhanping Liu [mailto:zhanping.liu at kitware.com]
Sent: Monday, July 20, 2009 9:55 AM
To: Moreland, Kenneth
Cc: Scott, W Alan; paraview
Subject: Re: [Paraview] File formats for particle visualization

Yes, the VTK EnSight Reader does support particle files while I am not sure if the term "particles" Alan mentioned is just the one supported by the VTK EnSight Reader. There seem to be multiple definitions of "particles".  For example, the one in 'measured particles' (supported by the VTK EnSight Reader) might be different from that in 'particle tracing'.

-Zhanping

--
Zhanping Liu, PhD
Kitware, Inc.
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x 138
http://www.zhanpingliu.org


On Mon, Jul 20, 2009 at 11:44 AM, Moreland, Kenneth <kmorel at sandia.gov<mailto:kmorel at sandia.gov>> wrote:
Any file format that holds unstructured grid or poly data and supports 0D cells (vertices, points, spheres, or whatever you want to call them) is sufficient.  If the particles remain consistent from one time step to the next, then I recommend the Exodus format because it has direct support for time and you can place everything in a single file.  However, Exodus assumes that the topology of your data does not change, so it does not directly support particles that are born or die.

If you do have particles that are born and die, I've heard of success with the EnSight format.  If at all possible, also write out "global ids" that uniquely identify the particles from one timestep to the next.  If you do not have that, it limits what ParaView can do with the particles.

-Ken


On 7/16/09 7:37 PM, "Scott, W Alan" <wascott at sandia.gov<http://wascott@sandia.gov>> wrote:

I have a user that runs particle physics simulations and wants to write this into files that ParaView can easily read.

What are good file formats for particle simulations?

Thanks,

Alan

--------------------------------------------------------
W. Alan Scott
ParaView Support Manager

GAITS
Sandia National Laboratories, MS 0822
Org 9326 - Building 880 A1-C
(505) 284-0932   FAX (505) 845-0833
---------------------------------------------------------








   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov<http://kmorel@sandia.gov>
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel


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