Hi:
Here's one take:
shalve <- function(x) {
nc <- sapply(x, nchar)
ns <- nc %/% 2
cbind(a1 = substring(x, 1, ns),
a2 = substring(x, ns + 1, nc))
}
> shalve(a)
a1a2
[1,] "1" "1"
[2,] "1" "2"
[3,] "12" "34"
[4,] "12" "45"
[5,] "124" "567"
[6,] "126" "786"
[7,] "14
How to substring the following vector (in data frame b)
>b
a
11
12
1234
1245
124567
126786
145769
such that:
a1 a2
1 1
1 2
12 23
12 34
124 567
126 787
145 769
I tried logical commands with substr() did not work out.
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R-help@r
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