将列拆分为两个,在r中使用"/"分隔符

Question

我有以下类型的数据,虽然data.frame非常大.

A1 <- c("A/B", "A/A", "B/B", "A/A")
B1 <- c("B/B", "C/C", "C/B", "D/A")
C1 <- c("B/B", "C/C", "C/B", "D/A")
mydf <- data.frame (A1, B1, C1)
mymat <- as.matrix (mydf)
mymat
         A1    B1    C1   
[1,] "A/B" "B/B" "B/B"
[2,] "A/A" "C/C" "C/C"
[3,] "B/B" "C/B" "C/B"
[4,] "A/A" "D/A" "D/A"

我希望将每列分成两个"/"是sperator.因此输出看起来像:

    A1a  A1b   B1a  B1b    C1a  C1b   
[1,] A   B      B    B     B     B 
[2,] A   A      C    C     C     C
[3,] B   B      C    B     C     B
[4,] A   A      D    A     D     A

Answer 1

这是一种温和狡猾的方式.在字符之间添加"/"并将其作为分隔符读入:

splitdf <- read.table(text=capture.output(write.table(mydf, quote=FALSE, 
                                        sep="/",col.names=FALSE,row.names=FALSE)),
                       sep="/")
names(splitdf) <- paste( rep(names(mydf), each=2), c("a","b"), sep="")
 splitdf
#------------
  A1a A1b B1a B1b C1a C1b
1   A   B   B   B   B   B
2   A   A   C   C   C   C
3   B   B   C   B   C   B
4   A   A   D   A   D   A