Steve Holden wrote: > About the best interpretation I can think of is to add 180 degrees to > the angle and reverse the sign of the magnitude, but this would be a > hack. Where are those coordinates coming from?
Well, sometimes in polar coordinates (r, theta), r is allowed to be negative. The usual translation from polar to Cartesian coordinates makes this meaningful, albeit weird, so in effect the resulting positions are just reflections around the origin. Which I suppose is what the original poster was asking about, but it's still not clear. -- Erik Max Francis && [EMAIL PROTECTED] && http://www.alcyone.com/max/ San Jose, CA, USA && 37 20 N 121 53 W && AIM, Y!M erikmaxfrancis The conviction of wisdom is the plague of man. -- Montaigne -- http://mail.python.org/mailman/listinfo/python-list