[R-sig-ME] Vignettes RePsychLing

[lorenz.gygax at agroscope.admin.ch]

Dear all,

As a user of mixed-models - greatest thanks to all contributors to lme4 specifically! - I have read 
with interest the maybe not-so-recent-anymore discussion on how many random effects can reasonably be included in a mixed model for a given data set. I was intrigued by the use of pca to assess rank deficiency in mixed-models as suggested in "Parsimonous mixed models" by Doug Bates et al. (http://arxiv.org/abs/1506.04967). As suggested there, I wanted to check the vignette(s) for RePsychLing on how to use the rePCA function.

I have followed the instruction on Harald Baayen's site (http://www.sfs.uni-tuebingen.de/~hbaayen/publications.html):

library(devtools) 
devtools::install_github("dmbates/RePsychLing") 
vignette(package="RePsychLing")
vignette("PCA", package="RePsychLing")
vignette("KB", package="RePsychLing")

The installation runs without error and seems to be doing fine. When I try to call the vignettes, though, there is an error telling me that there is no pdf nor html version. Can you tell me what crucial point I am missing here?

Many thanks and regards, Lorenz
-
Lorenz Gygax
Federal Food Safety and Veterinary Office FFSVO
Centre for Proper Housing of Ruminants and Pigs
Tänikon, CH-8356 Ettenhausen, Switzerland