Useful for splitting variable names that a combination of multiple
variables. Uses type.convert to convert each column to
correct type, but will not convert character to factor.
colsplit(string, pattern, names)
Arguments
- string
character vector or factor to split up
- pattern
regular expression to split on
- names
names for output columns
Examples
x <- c("a_1", "a_2", "b_2", "c_3")
vars <- colsplit(x, "_", c("trt", "time"))
vars
#> trt time
#> 1 a 1
#> 2 a 2
#> 3 b 2
#> 4 c 3
str(vars)
#> 'data.frame': 4 obs. of 2 variables:
#> $ trt : chr "a" "a" "b" "c"
#> $ time: int 1 2 2 3