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How to create a mask with a hole in it?

• To: mathgroup at smc.vnet.net
• Subject: [mg14985] How to create a mask with a hole in it?
• From: Michael Kubovy <mk9y at virginia.edu>
• Date: Wed, 2 Dec 1998 03:59:06 -0500
• Organization: University of Virginia
• Sender: owner-wri-mathgroup at wolfram.com

I am requesting help to do the following: Show a pattern (a lattice of
multicolored dots in this case) as if seen through a circular aperture
in a rectangular black screen.

|\  /|  / Michael Kubovy, Professor of Psychology, Dept of Psychology |
\/ | /  Univ of Virginia, Gilmer Hall, Charlottesville, VA 22903-2477 |
|/\  office (B011): 804-982-4729, lab (B019): -4751, fax: -4766  |    |
\ HTTP://www.virginia.edu/~mklab/

• Follow-Ups:
  • Re: How to create a mask with a hole in it?
    • From: Jurgen Tischer <jtischer@col2.telecom.com.co>