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Re: SVDFIT Problems [message #32110 is a reply to message #32043]

Tue, 10 September 2002 15:42

William Clodius
Messages: 30
Registered: December 1996

Member

Bill wrote:<snip>

> small = where(VARIANCE lt max(VARIANCE)*THRESH, count)
> identifes as small those quantities with the smallest magnitude variances. If
> relative magnitude (i.e., units) can be ignored, the current code reports as singular
> precisely those quantities that are best determined given the uncertainties in the
> input data, while singular is intended to identify those quantities that may be badly
> determined due to numerical problems.

FWIW IDL support has decidet that the above comparison is indeed invalid and will be
fixed in the next release of IDL.

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[Message index]

		SVDFIT Problems By: William Clodius on Fri, 30 August 2002 09:06
		Re: SVDFIT Problems By: Chris Torrence on Tue, 03 September 2002 08:20
		Re: SVDFIT Problems By: William Clodius on Thu, 05 September 2002 10:26
		Re: SVDFIT Problems By: William Clodius on Fri, 06 September 2002 10:08
		Re: SVDFIT Problems By: William Clodius on Tue, 10 September 2002 15:42
		Re: SVDFIT Problems By: William Clodius on Thu, 05 September 2002 16:43
		Re: SVDFIT Problems By: James Kuyper on Thu, 05 September 2002 13:15

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