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Re: Principal components analysis [message #14460 is a reply to message #10883]

Wed, 03 March 1999 00:00

wmc
Messages: 117
Registered: February 1995

Senior Member

Mark McGillion <mm@fs1.co.umist.ac.uk> wrote:
> What I need to know is......what contribution is made to these derived
> variables by each of the original 500 variables. Is it possible to
> determine
> which of the original 500 variables provided the greatest contribution
> to each derived variable?

This isn't really an IDL question... there is a lot about principal components
(aka empirical orthogonal functions) in the meteorogical literature. Try,
for example, Richman (1986, J. Climatology) for some examples of how ignorance
can make you go badly wrong ;-). It also has lots of refs to earlier studies...

- William

--
William M Connolley | wmc@bas.ac.uk | http://www.nbs.ac.uk/public/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself

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[Message index]

		Principal Components Analysis By: Denis on Wed, 11 February 1998 00:00
		Re: Principal components analysis By: wmc on Wed, 03 March 1999 00:00
		Re: Principal components analysis By: menakkis on Wed, 03 March 1999 00:00

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