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Re: ellipse fitting? [message #30515 is a reply to message #30371]

Sun, 28 April 2002 07:51

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"tom" <tom2959@21cn.com> writes:

> I found a matlab function for ellipse, but it is not easy for me translate
> to IDl. For example,
>
> % Solve eigensystem
> [gevec, geval] = eig(S,C);
>
> are there any function like eig(S,C) in IDL?
>
> The matlab for ellips fitting is as following, who have a idl version?

If you have the set of (x,y) points which define the outline of the
ellipse, then how about MPFITELLIPSE? There are a few auxiliary
routines to download as well.

Craig

http://cow.physics.wisc.edu/~craigm/idl/idl.html (under Fitting)

--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		ellipse fitting? By: tom on Sat, 27 April 2002 06:52
		Re: ellipse fitting? By: hradilv.nospam on Mon, 29 April 2002 09:19
		Re: ellipse fitting? By: Craig Markwardt on Sun, 28 April 2002 07:51
		Re: ellipse fitting? By: David Fanning on Sat, 27 April 2002 17:58
		Re: Ellipse fitting? By: David Gell on Wed, 13 May 2009 06:18
		Re: Ellipse fitting? By: Kenneth P. Bowman on Tue, 12 May 2009 15:10
		Re: Ellipse fitting? By: David Fanning on Tue, 12 May 2009 14:18

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