Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2002
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2002

[Date Index] [Thread Index] [Author Index]

Search the Archive

lissajous

  • To: mathgroup at smc.vnet.net
  • Subject: [mg37133] lissajous
  • From: "Steve Story" <sbstory at unity.ncsu.edu>
  • Date: Sat, 12 Oct 2002 05:05:02 -0400 (EDT)
  • Organization: NC State University
  • Sender: owner-wri-mathgroup at wolfram.com

When using Parametric Plot to make closed Lissajous curves, it's best not to
take the parameter too far. for instance the code
ParametricPlot[{Sin[t], Sin[2t]}, {t, 0, 10Pi}]

looks much the same if you go to 20Pi or 30 Pi. But if you go too far, say,
1000Pi, the curve will stray so much that it can appear, deceptively, to be
an open Lissajous curve, filling the rectangle. I don't understand how it's
doing this. I assume the reason has to do with machine precision, but can
anyone tell me in a little detail what's happening here?

thanks,
--



_______________

 Steve Story
 Polymer Research Group
 411B Cox
 North Carolina State University
 1-919-515-8147

 _______________




  • Prev by Date: Re: Mathematica 4.2: Problem with online help.
  • Next by Date: XML and the DTDs and etc.
  • Previous by thread: Re: Mathematica 4.2: Problem with online help.
  • Next by thread: RE: lissajous