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Nonlinear PCA function

3 messages · Feng Zhang, Jan de Leeuw, Frank E Harrell Jr

Original
Feng Zhang
# 
Hey, all

Do you know if there are some Nonlinear PCA algorithm
or functions provided by R package?

Now I am working on this and want to see if somebody already did this by R
language.

Thanks a lot.

Fred

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Jan de Leeuw
# 
ftp://gifi.stat.ucla.edu/pub/homalsR.tar.gz

but since nonlinear PCA can de defined in various ways,
you may have something different in mind

--- Jan
On Thursday, Oct 17, 2002, at 13:56 US/Pacific, Feng Zhang wrote:

            

      
      
      
    

        
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Jan de Leeuw; Professor and Chair, UCLA Department of Statistics
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      Frank E Harrell Jr
    

    

      
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On Thu, 17 Oct 2002 16:20:51 -0700

        
Jan de Leeuw <deleeuw at stat.ucla.edu> wrote:

        

            

      
      
      
    

        
The transcan function in the Hmisc package does nonlinear PCs, or at least it derives the nonlinear transformations you can feed into prcomp or other functions.  See http://hesweb1.med.virginia.edu/biostat/s/Hmisc.html and a case study in my book Regression Modeling Strategies (Springer, 2001).