summary(college$Grad.Rate)
min.GradRate = college[college$Grad.Rate == 10, ]
nrow(min.GradRate)
[1] 1
rownames[as.numeric(rownames(min.GradRate))]
Error in rownames[as.numeric(rownames(min.GradRate))] :
object of type 'closure' is not subsettable
我不知道输出行名的任何其他方法,我不知道如何修复此错误。
你是说这个吗?
library(ISLR)
min.GradRate = College[College$Grad.Rate == 10,]
row.names(min.GradRate)
输出是:
[1] "Texas Southern University"