[Ifeffit] Sixpack, PCA controll, "IND" column

Matthew Marcus mamarcus at lbl.gov
Thu Jun 21 11:28:56 CDT 2012


That book is out of print and hard to get.  You should refer to later papers.

The IND function is not necessarily robust.  It's not rigorously derived, but is sort of empirical.
	mam

On 6/21/2012 9:20 AM, Baker, Leslie wrote:
> This is the factor indicator function.  Its minimum can be used to
> indicate the correct number of meaningful factors.
>
> There's an explanation here:
> http://www.vub.ac.be/fabi/multi/pcr/chaps/chap6.html
>
> For more information, see Malinowski's book Factor Analysis in
> Chemistry.
>
> -Leslie
>
>
> -----Original Message-----
>
> Hello,
>
> does anyone know the meaning of the IND column in the PCA controll field
> of sixpack (version 0.63)?
>
> I did not found a hint in the sixpack documentation.
>
> Best regards
> Joerg
>
>
>
> **
> Leslie L. Baker, Ph.D.
> Department of Plant, Soil and Entomological Sciences
> University of Idaho
> Moscow, ID 83844-2339
> 208-885-9239
> http://scholar.google.com/citations?user=ejpH5p0AAAAJ
>
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