我有一个8个变量的数据框(x1,x2 .. x8)
我想使用以下方法获取箱图的异常值:
boxplot(dataframe, plot=FALSE)$out
我想要的输出是让数据框列出每个变量的异常值。如下:
variable outlier
x1 outlier1 from x1
x1 outlier2 from x1
x1 outlier3 from x1
x1 outlier4 from x1
x2 outlier1 from x2
x2 outlier2 from x2
x2 outlier3 from x2
.
.
.
x8 outliern from x8
感谢您的支持,
答案 0 :(得分:1)
这是你想要的吗?
> testdata <- data.frame(x1=runif(1e3),x2=rnorm(1e3),x3=rnorm(1e3))
> temp <- boxplot(testdata,plot=F)
> cbind(temp$group,temp$out)
[,1] [,2]
[1,] 2 2.765277
[2,] 2 2.754730
[3,] 2 -2.714811
[4,] 2 3.257889
[5,] 3 2.605549
[6,] 3 -3.261950
[7,] 3 -3.057532
[8,] 3 2.820352
[9,] 3 2.602933
[10,] 3 2.580897
[11,] 3 2.899350