Hello, all, I am still unfortunately struggling with the Dots.py program to get it to do what I want. I would like to control the position of the dots in a way that they coalesce into bands across the screen, moving in the same direction. I have written something from scratch to do this, but I was just wondering how to modify the Dots.py program to control the dot movements within the Dots.py program. However, each time I modify the Dots.py program in the VisionEgg folder, nothing happens when I then run the demo 'dots.py'. Is there something else I would need to do to get the changes I make to be implemented? Thank you, Angelique Queensland Brain Institute University of Queensland St. Lucia campus Brisbane, Queensland, Australia ====================================== The Vision Egg mailing list Archives: //www.freelists.org/archives/visionegg Website: http://www.visionegg.org/mailinglist.html