That is a pretty open ended question. Unstructured grids are defined by an array of point coordinates and a separate array of cell topologies. In your case, the list of points will simply correspond to each particle, and each cell will be a 0D cell (a vertex) that points to a single point. There are actually two types of unstructured data supported, poly data and unstructured grid. All things being equal, I would probably use the poly data type because you won't have to identify each cell type.
ParaView supports multiple file formats for this type of data. One you can use is the legacy data format. It's not an optimal file format, but it's easy to make these files and the documentation is readily available from the VTK User's Guide and the ParaView wiki ((http://www.paraview.org/Wiki/images/5/51/VTK-File-Formats.pdf). This format does not support time natively, but you can write out a sequence of files with incremental numbering, and ParaView will read that as a time series. The files could look something like the following (with the <..> replaced with an appropriate value). # vtk DataFile Version 2.0 <A descriptive comment> ASCII DATASET POLYDATA POINTS <num_particles> double <P0x> <P0y> <P0z> <P1x> <P1y> <P1z> ... <Pn-1x> <Pn-1y> <Pn-1z> VERTICES <num_particles> <2*num_particles> 1 0 1 1 ... 1 n-1 POINT_DATA <num_particles> SCALARS <field_name> double 1 LOOKUP_TABLE default S0 S1 ... Sn-1 -Ken On 9/24/08 3:18 AM, "christopher mccabe" <[EMAIL PROTECTED]> wrote: > > > Hi > > I am new to using Paraview and would like some assistance if possible. I am > researching particle dynamics and need to create files for unstructured grids. > For the moment as I have just started all I have are particle locations, but I > will later require several physcial variables for view. > > So I have a problem in which X number of particles are initially static and > after an initial shock the particles dissipate. I would like to view the > simulation of this by a Paraview animation of the particle locations recorded > at fixed time intervals. > > What do I need to write in the vtk file for this , and why? > > I am using Paraview 3.2.2 > > Thanks in advance > > Chris > > > _________________________________________________________________ > Discover Bird's Eye View now with Multimap from Live Search > http://clk.atdmt.com/UKM/go/111354026/direct/01/ > _______________________________________________ > ParaView mailing list > ParaView@paraview.org > http://www.paraview.org/mailman/listinfo/paraview > **** Kenneth Moreland *** Sandia National Laboratories *********** *** *** *** email: [EMAIL PROTECTED] ** *** ** phone: (505) 844-8919 *** fax: (505) 845-0833 _______________________________________________ ParaView mailing list ParaView@paraview.org http://www.paraview.org/mailman/listinfo/paraview
