Ah, just what I needed. Thanks! On Aug 21, 2012, at 1:06 PM, Ric Sherlock wrote:
> The primitive ( |: ) is transpose. E.g. : > > |: i. 3 4 > 0 4 8 > 1 5 9 > 2 6 10 > 3 7 11 > On Aug 22, 2012 6:55 AM, "Owen Marschall" <omarschal...@amherst.edu> wrote: > >> Anyone know of an easy way to create a random symmetric matrix (more >> specifically, a matrix whose entires are each picked from a standard >> Gaussian distribution)? I can start by doing >> >> load 'stats' >> R=:normalrand N N >> >> but this is not symmetric, and I don't know of any way to symmetrize it >> without thinking in loops, which I'm training myself not to. If I could >> somehow take a transpose, that would solve the problem, but I don't know >> how to do that either. >> >> Thanks, >> Owen >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
