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Re: st: perceptual maps in Stata


From   "Data Analytics Corp." <dataanalytics@earthlink.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: perceptual maps in Stata
Date   Fri, 30 May 2008 17:08:38 -0400

Hi,

I was hoping to avoid some coding, but the consensus seems to be to just use pca or factor.

Thanks,

Walt


jverkuilen wrote:

###Does anyone know of some Stata code to do a perceptual map (MDPREF or PREFMAP)?###

Those are SVD-based procedures if I recall right (it's been a while since Larry Hubert's multivariate course). Proper choice of the normalization in -biplot- shold do what you want.

JV

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