Separate Year Groups

Source: R/year.R

Separates a column containing year groups, such as "1983-1985", into two separate columns named year_min and year_max by default.

separate_year_groups(data, year_group = year_group,
  into = c("year_min", "year_max"), sep = "-")

Arguments

data

A data frame
year_group

The unquoted column containing the year_group.
into

The names of the min year and max year columns (respectively) into which the minimum and maximum year from year_group are added. Set to NULL to use the year_group column name as a prefix with _min and _max appended.
sep

Characters separating years in year. Whitespace on either side of sep will be automatically removed. Passed to tidyr::separate().

See also

Other year processors: add_mid_year_groups, complete_year_groups

Examples

year_groups <- c("1981-1985", "1986-1990", "1991-1995", "1996-2000",
                 "2001-2005", "2006-2010", "2011-2015")

dplyr::tibble(year_group = year_groups) %>%
  separate_year_groups()
#> # A tibble: 7 x 3
#>   year_group year_min year_max
#>   <chr>      <chr>    <chr>   
#> 1 1981-1985  1981     1985    
#> 2 1986-1990  1986     1990    
#> 3 1991-1995  1991     1995    
#> 4 1996-2000  1996     2000    
#> 5 2001-2005  2001     2005    
#> 6 2006-2010  2006     2010    
#> 7 2011-2015  2011     2015