R Experts,

I had a problem when trying to install package tm. The install looked successful ("Package 'tm' successfully unpacked and MD5 sums checked") but I could not load it through
library(tm). It kept complaining that tm package was not installed.

So it was through this problem that I realized I had two locations where my packages are stored:
C:R/R-3.0.2/library  #Preferred
\\\\lab.gov/users/lopez/Data/documents/R/win-library/3.0  #NOT Preferred

I am not sure when and how the second location was created.  But now I want to change my default location to the "Preferred" location.

I referred to http://stat.ethz.ch/R-manual/R-devel/library/base/html/libPaths.html but I don't understand how to set the environment variables R_LIBS or R_LIBS_SITE, which is what I understood I need to do. I looked in R\R-3.0.2\etc and did not find a Renviron file (per http://mathematicalcoffee.blogspot.com/2013/04/getting-rstudio-to-include-your.html). So I created one (file name exactly as "Renviron") and set the variable (R_LIBS_USER=~/R/library) there but when I do the following I still see both library paths:
 > .libPaths()
[1] "\\\\lab.gov/users/lopez/Data/documents/R/win-library/3.0" "C:/R/R-3.0.2/library"

I only want the preferred path. How do I remove the unwanted path?

BTW I did find a solution to installing tm properly but want to prevent similar problem from happening in the future by only having one library path.

Dan Lopez
Workforce Analyst
HRIM - Workforce Analytics & Metrics
Strategic Human Resources Management
(925) 422-0814



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