Quote - Quote - "Does anyone know if you can alter the orientation of ecosystem elements with a bitmap so you can determine which direction houses face, for instance?"

That has been discussed more than once in this forum. As far as I remember, there was never a satisfactory answer (i.e, a fully automatic method). I don't know the answer. Maybe eonite and ArtPearl will come to your rescue here as they seem to have mastered the mathematics behind the function editor (see other recent threads). :-)

Coming from you, Artur, that is quite a  compliment! Hurray! I made it - with a few quantum leaps thanks to some helpful guys/girls on the net, I can do a thing or two in vue:)
Or are you throwing down the gauntlet? I cant speak for eonite, but from my point of view you may be a gauntlet short for quite awhile:) I keep thinking about this problem from time to time and havent found a solution yet. Although in this case, with roads in parallel/perpendicular arrangement, there must be something...I'll think again this weekend, but dont hold your breath!

"I paint that which comes from the imagination or from dreams, or from an unconscious drive. I photograph the things that I do not wish to paint, the things which already have an existence."
Man Ray, modernist painter
http://artpearl.redbubble.com/