需要在R中转置单个列
我有一个数据框需要在R中转置单个列,r,R,我有一个数据框myDf,看起来像: myDf = data.frame( a = c(1,1), b = c('A','B'), d = c(10,15), e = c(0,5) ) 现在我需要转置b列,以便我的新数据帧 myDf_transposed = data.frame( a = 1, A_d = 10, A_e = 0, B_d = 15, B_e = 5 ) 我试过: library(reshape2) myDf_tansposed <-
myDf
,看起来像:
myDf = data.frame(
a = c(1,1),
b = c('A','B'),
d = c(10,15),
e = c(0,5)
)
现在我需要转置b列,以便我的新数据帧
myDf_transposed = data.frame(
a = 1,
A_d = 10,
A_e = 0,
B_d = 15,
B_e = 5
)
我试过:
library(reshape2)
myDf_tansposed <- recast(myDf, a ~ b, id.var = c("b", "a","d","e"))
library(重塑2)
myDf_tansposed我们可以使用data.table
中的dcast
,它可以获取多个value.var
列
library(data.table)
dcast(setDT(myDf), a~b, value.var = c('d', 'e'))
重塑(myDf,idvar=“a”,timevar=“b”,direction=“wide”)
适合我。谢谢你的帮助!成功了。