如何将数据框中的特定列进行转置:
id<- c(1,2,3)
t0<- c(0,0,0)
bp0<- c(88,95,79)
t1<- c(15,12,12)
bp1<- c(92,110,82)
t2<- c(25,30,20)
bp2<- c(75,99,88)
df1<- data.frame(id, t0, bp0, t1, bp1, t2, bp2)
df1
> df1
id t0 bp0 t1 bp1 t2 bp2
1 1 0 88 15 92 25 75
2 2 0 95 12 110 30 99
3 3 0 79 12 82 20 88
In order to obtain:
> df2
id t bp
1 1 0 88
2 2 0 95
3 3 0 79
4 1 15 92
5 2 12 110
6 3 12 82
7 1 25 75
8 2 30 99
9 3 20 88
为了获取与“id”对应的t(t0,t1,t2)和bp(bp0,bp1,bp2),以获取df2。