I'm trying to install ggplot2 but get the error message in the console. The message is like that:
Warning in install.packages :
unable to access index for repository http://cran.rstudio.com/src/contrib:
не могу открыть URL 'http://cran.rstudio.com/src/contrib/PACKAGES'
Warning in install.packages :
Warning in install.packages :
package ‘ggplot2’ is not available for this version of R