How to switch CRAN of R language to Tsinghua mirror in ubuntu 创建文件 touch ~/.Rprofile 添加内容 tee ~/.Rprofile <<-'EOF'options("repos" = c(CRAN="https://mirrors.tuna.tsinghua.edu.cn/CRAN/"))
灯塔(LightHouse) Description As shown in the following figure, If another lighthouse is in gray area, they can beacon each other. For example, in following figure, (B, R) is a pair of lighthous
灯塔(LightHouse) Description As shown in the following figure, If another lighthouse is in gray area, they can beacon each other. For example, in following figure, (B, R) is a pair of lightho