colsplit: Split a vector into multiple columns

In reshape2: Flexibly Reshape Data: A Reboot of the Reshape Package

Description

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.

Usage

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
str(vars)

Example output

  trt time
1   a    1
2   a    2
3   b    2
4   c    3
'data.frame':	4 obs. of  2 variables:
 $ trt : chr  "a" "a" "b" "c"
 $ time: int  1 2 2 3

reshape2 documentation built on April 14, 2020, 5:26 p.m.