OUCH: Ornstein-Uhlenbeck models for Comparative
hypotHeses
OUCH is a package for phylogenetic comparative analysis. Ongoing
support for the package will primarily be in the R language
(www.r-project.org), but a MATLAB (www.mathworks.com) version of the basic
functionality exists as well. Most of the functions in the MATLAB
version will run under the free software package octave
(www.octave.org).
The method is based on the ideas of Thomas F. Hansen (see
T. F. Hansen, 1997. Stabilizing selection and the
comparative analysis of adaptation. Evolution,
51:1341-1351). It is explained fully in
Butler, M.A. and A.A. King, 2004. Phylogenetic comparative
analysis: a modeling approach for adaptive evolution. American
Naturalist164:683-695.
Reprints are available on request from the authors (write to
<mabutler at utk dot edu> or
<kingaa at umich dot edu>).
The appendix for this paper, in which the mathematical
underpinnings are explained, is provided here (in PDF).