[R] Recommendation for updating packages such as nlme

[Frank Harrell]

I use this function to update my installed R packages:

updatePac <- function (checkBuilt = FALSE, ...)
update.packages(repos = "http://cran.rstudio.com", instlib = 
"/usr/local/lib/R/site-library",
     checkBuilt = checkBuilt, ...)

When I type updatePac() I get:

Warning: package 'MASS' in library '/usr/lib/R/library' will not be updated
Warning: package 'Matrix' in library '/usr/lib/R/library' will not be 
updated
Warning: package 'mgcv' in library '/usr/lib/R/library' will not be updated
Warning: package 'nlme' in library '/usr/lib/R/library' will not be updated
Warning: package 'nnet' in library '/usr/lib/R/library' will not be updated
Warning: package 'spatial' in library '/usr/lib/R/library' will not be 
updated

Should I not try to update recommended packages in 
/usr/local/lib/R/site-library on my Ubuntu system but specify 
/usr/lib/R/library instead?

-- 
------------------------------------------------------------------------
Frank E Harrell Jr 	Professor and Chairman 	School of Medicine

	Department of *Biostatistics* 	*Vanderbilt University*


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