安裝RTextTools當我試圖安裝RTextTools包R,但未能成功。這裏是屏幕輸出問題的R
> > install.packages("RTextTools")
Warning in install.packages("RTextTools") :
argument 'lib' is missing: using 'C:\Users\datamining\Documents/R/win-library/2.10'
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.10
Warning message:
In getDependencies(pkgs, dependencies, available, lib) :
package ‘RTextTools’ is not available
這個問題的原因是什麼,以及如何解決它?謝謝。