[R] [R-pkgs] New car package with new linear.hypothesis function

From: John Fox <jfox_at_mcmaster.ca>
Date: Tue 07 Feb 2006 - 11:39:37 EST


Dear R-packages list members,

Last month, Peter Muhlberger posted a message to the r-help list that suggested, among other things, a desire for a more convenient method of performing Wald tests for statistical models fit in R.

Thanks largely to Achim Zeleis's help, the linear.hypothesis function in the car package has been reworked so that (1) it is applicable to any model object that responds to the generic coef() and vcov() functions (along with specific methods for lm and glm objects); and (2) permits symbolic specification of hypotheses as linear equations in the named parameters of the model. I'd be particularly interested in people's reactions to the new interface and to learn of any problems that arise

The new version 1.1-0 of the car package (with some other, less significant changes and additions) is now on CRAN.

Regards,
 John



John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox

R-packages mailing list
R-packages@stat.math.ethz.ch
https://stat.ethz.ch/mailman/listinfo/r-packages

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Feb 07 11:48:03 2006

This archive was generated by hypermail 2.1.8 : Wed 08 Feb 2006 - 02:44:32 EST