我正在使用当前的R版本(3.3.0,r68650).如果我试图安装一个R包,则会发生以下错误: --- Pleaseselect a CRANmirror for use in this session ---
Error in url("https://cran.r-project.org/CRAN_mirrors.csv&
Installing package into ‘/home/user/R/x86_64-pc-linux-gnu-library/3.0’--- Pleaseselect a CRANmirror for use in this session ---package ‘ggtern’ is not availablec("ggplot2