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See:

Wartenberg, D., S. Ferson, and F. J. Rohlf. 1987. Putting Things in Order - a Critique of Detrended Correspondence-Analysis. American Naturalist 129:434-448.

 

That paper basically points out that the method (at least at that time) does nothing but to hide the arch of the horseshoe.  It does not change the ordering of points along the first axis – it just changes the scatter along the second axis so one does not see the arch.

 

Jim

----------------------

F. James Rohlf, Distinguished Professor

Dept. Ecology and Evolution, Stony Brook University, NY 11794-5245

 

From: Classification, clustering, and phylogeny estimation [mailto:[log in to unmask]] On Behalf Of Shannon, William
Sent: Thursday, March 25, 2010 10:49 AM
To: [log in to unmask]
Subject: Question for the list

 

What can people tell us about Detrended Correspondence Analysis

 

Thank you

 

Bill Shannon, PhD

Associate Prof. of Biostatistics in Medicine

Washington University School of Medicine

660 South Euclid Ave, Box 8005

St. Louis, MO 63110

 

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