应该这样做:

samp2 <- samp[,-1]
rownames(samp2) <- samp[,1]

简而言之，除了重新分配，别无选择.

So in short, no there is no alternative to reassigning.

纠正自己，也可以原地做:分配rowname属性，然后删除列:

Correcting myself, one can also do it in place: assign rowname attributes, then remove column:

R> df<-data.frame(a=letters[1:10], b=1:10, c=LETTERS[1:10])
R> rownames(df) <- df[,1]
R> df[,1] <- NULL
R> df
   b c
a  1 A
b  2 B
c  3 C
d  4 D
e  5 E
f  6 F
g  7 G
h  8 H
i  9 I
j 10 J
R>