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Re: FIT_ELLIPSE [message #90739 is a reply to message #90730]

Wed, 08 April 2015 16:09

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Tuesday, April 7, 2015 at 3:18:15 PM UTC-4, Sam Murphy wrote:
> Hello,
>
> The FIT_ELLIPSE program has been really useful for me!
>
> I was wondering how to reference the technique used to calculate the major and minor axes?
>
> The use of a 'mass distribution tensor' instead of the covariance of the data points seems novel to me (and computationally more efficient).

"Mass distribution tensor" is basically the same as the moments of the distribution, which is related to the covariance matrix. There's no magic here.

Craig

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		FIT_ELLIPSE By: samsammurphy on Tue, 07 April 2015 12:18
		Re: FIT_ELLIPSE By: David Fanning on Tue, 07 April 2015 19:18
		Re: FIT_ELLIPSE By: Craig Markwardt on Wed, 08 April 2015 16:09

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