soindy

Mac 通过 homebrew 安装 R: 安装 homebrew (如果没有) :ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"安装 Rbrew tap homebrew/sciencebrew install r或者 brew install homebrew

R 赋值赋值 :x <- 2console :[1] 2 注: index 从 1 开始向量 (vector)只能包含同一类型的对象 # vector(mode = "logical", length = 0L) (类型,长度)x <- vector("character",length = 4)console :chr [1:4] "" "" "" ""或x1 <- 1:4 cons