= c("jimmy 150","nicker 140","tony 152")str_split(y," ")str_split(y," ",simplify = T) #返回矩阵注意:simplify...'-')}ifelse(i>0,"+",ifelse(i<0,"-","0"))2.for循环for (i in x) {CODE}图片下标循环用两个中括号identical(x1,x2) #判断两个变量是否一致...(data = a)+ geom_boxplot(aes_string(y = i, x = "g")) print(p) }# 下标循环,可以保存数据p...= list()for (i in 1:3) { p[[i]] = ggplot(data = a)+ geom_boxplot(aes_string(y = colnames(a)[[i]...(向量)实施相同的操作test <- list(x = 36:33,y = 32:35,z = 30:27);test#返回值是列表,对列表中的每个元素(向量)求均值(试试方差var,分位数quantile