我怎么能订购像这样的矢量
c("7","10a","10b","10c","8","9","11c","11b","11a","12") -> alph
在
alph
[1] "7","8","9","10a","10b","10c","11a","11b","11c","12"
并使用它来对data.frame进行排序
V1 <- c("A","A","B","B","C","C","D","D","E","E")
V2 <- 2:1
V3 <- alph
df <- data.frame(V1,V2,V3)
并命令行获取(订单V2,然后V3)
V1 V2 V3
C 1 9
A 1 10a
B 1 10c
D 1 11b
E 1 12
A 2 7
C 2 8
B 2 10b
E 2 11a
D 2 11c