[R] Incomplete Output from lmer{lme4}

From: Lusk, Jeffrey J <jjlusk_at_purdue.edu>
Date: Fri 19 May 2006 - 01:40:17 EST


I'm still relatively new to R, so my apologies if this is covered somewhere. I've been running some mixed-effect models in R using lme{nlme}, but read in Faraway's recent book, Extending the Linear Model with R, that lmer in package lme4 is a much improved version. I tried using this approach, but the output for the fixed effects doesn't report a p-value or the degrees of freedom (unlike the examples listed in Faraway's book, which I tried and got the same incomplete output). Any idea how I can get the complete output?

In a related problem, I've been having trouble with the lines and abline in the graphics package. Occasionally, they fail to add the requested line to the figure, but R doesn't return any error (it's as if executing the command does nothing). I've replicated this problem with code and data directly from R texts such as Crawley's Statistics: An Introduction Using R, so I don't think it is operator error (but it could be). Any ideas?

Thanks,

Jeff--


 

Jeffrey J. Lusk, Ph.D.
Postdoctoral Research Associate
Department of Forestry & Natural Resources Purdue Climate Change Research Center
Purdue University
715 West State Street; Pfendler Hall
West Lafayette, IN 47907
Phone: 765-494-9701
E-mail: jjlusk@purdue.edu
Web: http://www.geocities.com/jefflusk2002



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