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MathGroup Archive 1995

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Re: Find the center!

  • To: mathgroup at
  • Subject: [mg1127] Re: Find the center!
  • From: wagner at bullwinkle.cs.Colorado.EDU (Dave Wagner)
  • Date: Wed, 17 May 1995 01:59:11 -0400
  • Organization: University of Colorado, Boulder

In article <3p1dtm$n2n at>,
Gottfried Mayer-Kress  <gmk at> wrote:
>There are a bunch of points in 3-space and they are supposed to be 
>scattered around the surface of a sphere. You want to find the
>center of the sphere and the radius.
>NB: The data are noisy (about 2% of the radius) and only cover a patch 
>on the sphere.
>I think I have a reasonable solution, but maybe someone knows of some 
>real elegant method?

There were several approaches to this problem in The Mathematica Journal
a couple of years ago, in several different issues.  They probably were
in Paul Abbott's "Tricks of the Trade" column.

		Dave Wagner
		Principia Consulting
		(303) 786-8371
		dbwagner at

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