Thanks John--just needed to rtfm a little farther down :)
Anthony
John Fox wrote:
Dear Anthony,
From ?sem:
"If given as NA, the program will compute a start value, by a slight
modification of the method described by McDonald and Hartmann (1992). Note:
In some circumstances, some start values are selected randomly; this might
produce small differences in the parameter estimates when the program is
rerun."
To see exactly what's done, print out the startvalues function.
Regards,
John
------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web: socserv.mcmaster.ca/jfox
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On
Behalf Of Anthony Dick
Sent: January-25-09 9:15 PM
To: r-help@r-project.org
Subject: [R] sem package: start values
Hello-
If I input a variance-covariance matrix and specify NA for start values,
how does sem determine the start value? Is there a default?
Anthony
--
Anthony Steven Dick, Ph.D.
Post-Doctoral Fellow
Human Neuroscience Laboratory
Department of Neurology
The University of Chicago
5841 S. Maryland Ave. MC-2030
Chicago, IL 60637
Phone: (773)-834-7770
Email: ad...@uchicago.edu
Web: http://home.uchicago.edu/~adick/
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--
Anthony Steven Dick, Ph.D.
Post-Doctoral Fellow
Human Neuroscience Laboratory
Department of Neurology
The University of Chicago
5841 S. Maryland Ave. MC-2030
Chicago, IL 60637
Phone: (773)-834-7770
Email: ad...@uchicago.edu
Web: http://home.uchicago.edu/~adick/
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
