R中列表的排序列表:排序列表的值取决于其他列表的值

时间:2014-01-19 13:23:53

标签: r list

我需要一些帮助来排序列表。假设我有一个如下的孩子列表:

a <- list(name = "Ann", age = 9)
b <- list(name = "Bobby", age = 17)
c <- list(name = "Alex", age = 6)

my.list <- list(a, b, c)

我想按年龄排序他们的名字,所以收到以下内容:

> "Alex" "Ann" "Bobby"

1 个答案:

答案 0 :(得分:5)

a <- list(name = "Ann", age = 9)
b <- list(name = "Bobby", age = 17)
c <- list(name = "Alex", age = 6)

L <- list(a,b,c)
ages <- sapply(L,"[[","age")
names <- sapply(L,"[[","name")
names[order(ages)]