Hello everyone, This is my first project with pytables and from the manual and videos, it seems like it should suit my application very well. I'm currently trying to figure out how to go about organizing my groups, tables, and arrays logically for my simulation and post-processing.
I'm running a stochastic simulation of Brownian motion for a number of particles, for which I'll present a simplified version here. At each time step, I determine if some particles have left the system, determine the next position of the remaining particles, and then introduce new particles into the system at defined starting coordinates. I have a defined set of particle sources, which also act as sinks. I would like to store information about these sources as well as all the x-y-z location data for the particles. My current thought is to have two groups: sources and particles. sources would look like: /sources Group /sources/parameters Table (info such as # particles released+captured, and other parameters) /sources/coordinates Array (x-y-z coordinates) During the simulation, some values in /sources/parameters would be modified but the coordinates would be fixed. My _main problem_ is thinking about organizing my particles. Each particle has information associated with it such as its origin, endpoint, release-time, capture-time, etc, which I thought to store in one table. Each particle also has a history of x-y-z coordinates at given timepoints. For this, I think that an EArray() seems best for the x-y-z coordinates, and I'm not sure if the timepoint should also be in this array or not. Also, because the simulation will be dealing with 1e4 to 1e5 particles, I don't think it would be efficient to create separate tables for them. If anyone has any thoughts on how to organize the data, that would be helpful. I have found the thread on this mailing list "Advice on organizing data" (http://tinyurl.com/yd88ts5) and the linked PDF (http://zeus.ws.dei.polimi.it/is-manet/Documenti/pap-isti-5.pdf). I'm still trying to understand them but I think I'm getting there. I need a way to link the particle information with its location history. Thanks in advance. Faisal Moledina University of Toronto faisal.moled...@gmail.com P.S. I described my problem at the Python Tutor mailing list and pytables was suggested to me there. The link to that thread is http://www.mail-archive.com/tu...@python.org/msg39430.html. It describes my current SQLite method. ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
