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Re: Motion on ``discontinuous'' decoration bit



Alan Eliasen wrote:
  Jeff Tupper's program GrafEq is a wonderful demonstration of the
power of interval arithmetic for graphing functions:

  http://www.peda.com/grafeq/

  Especially see his "Rogues' Gallery" of equations that other software
packages that don't use interval arithmetic can graph drastically
incorrectly:

  http://www.peda.com/grafeq/gallery/rogue.html

  Hopefully everyone here has read his master's thesis on graphing
equations with interval arithmetic (which also compares affine
arithmetic and other techniques.)  If you haven't read it, please do so.


Dear Alan,

I've read Tupper's thesis and have used GrafEq for many years. I agree its a splendid little program!

Would one of the administrators be interested in inviting him?  His
e-mail address is found on the page above.

I'd certainly be interested to hear his comments...

Nate