我有两个数据帧如下:
df1 <- data.frame (a = c(1,2,3,4,5),
b = c(6,7,8,9,10),
x = c(6,7,8,9,10),
d = c(6,7,8,9,10),
z = c(6,7,8,9,10)
)
df1
看起来像是:
a b x d z
1 6 6 6 6
2 7 7 7 7
3 8 8 8 8
4 9 9 9 9
5 10 10 10 10
另一个数据帧df2
df2 = data.frame (km = c("d","z","b","x","a"))
如下所示:
km
d
z
b
x
a
我想按照第二个数据帧的行值对第一个数据帧的列进行排序,这样输出如下:
d z b x a
6 6 6 6 1
7 7 7 7 2
8 8 8 8 3
9 9 9 9 4
10 10 10 10 5