linux中R包安装报错：Warning: unable to

linux中R包安装报错：

Warning: unable to access index for repository https://mirrors.bfsu.edu.cn/CRAN/src/contrib:
  无法打开URL'https://mirrors.bfsu.edu.cn/CRAN/src/contrib/PACKAGES'
Warning message:
package ‘***’ is not available for this version of R

将https换成http

options(repos='http://cran.rstudio.com/')

转自：
https://blog.csdn.net/u013303361/article/details/85344742