Am 14.11.2012 20:20, schrieb Hans Hagen: > On 11/14/2012 7:55 PM, Peter Rolf wrote: >> Hi, >> >> in one of my documents I use a specific random seed to create a fixed >> random based graphic (size, color, position). This works fine under >> Windows (where I 'found' the seed value), but I get a complete different >> result on my Debian system. >> >> Is there a way to get identical results on different OS? Or is the >> random number generator OS specific? Just wondering... > > yes and it cannot be trusted either (some underlying os code is used); i > also found out that you need to call a couple of random's in a row first > to get at least not the same ones in the beginning > > in contetx I've now settled on: > > math.initialseed = > tonumber(string.sub(string.reverse(tostring(ceil(socket and > socket.gettime()*10000 or time()))),1,6)) > > Thanks for the info. The formula looks like an incantation for the god of random numbers ;-)
I already migrated the tex code to lua, so that I can do some post processing on the collected random based data. To get identical results, I only have to save the final data set then. ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
