wcq 我的r，rstudio，rtools 都已经更新到了最新版本R for windows 4.0.2, Rstudio1.3.1073, rtools40)，关于rtools40的安装我是根据这个链接的指示做的https://mirrors.tuna.tsinghua.edu.cn/CRAN/bin/windows/Rtools/ 看起来也是成功设置了路径的，但是包无法安装，请求各位大佬指点 file.edit('~/.Renviron') writeLines('PATH="${RTOOLS40_HOME}\\usr\\bin;${PATH}"', con = "~/.Renviron") Restarting R session... Sys.which("make") make "C:\\PROGRA1\\R\\R-401.2\\rtools40\\usr\\bin\\make.exe" install.packages("jsonlite", type = "source") Warning in install.packages : unable to access index for repository https://cran.rstudio.com/src/contrib: 无法打开URL'https://cran.rstudio.com/src/contrib/PACKAGES' Installing package into ‘C:/Users/asus/Documents/R/win-library/4.0’ (as ‘lib’ is unspecified) Warning in install.packages : unable to access index for repository https://cran.rstudio.com/src/contrib: 无法打开URL'https://cran.rstudio.com/src/contrib/PACKAGES' Warning in install.packages : package ‘jsonlite’ is not available (for R version 4.0.2)
tctcab 访问不了cran?试试换mirror install.packages("jsonlite", type="source", repos='https://mirrors.ustc.edu.cn/CRAN/')
