Return Grouping Labels

Returns a tibble of the grouping labels (usually class labels) corresponding a grouped_df class object.

Usage

group_labels(x)

Arguments

x

A data frame, tibble or grouped tibble.

See also

group_vars(), group_data()

Author

Stu Field

Examples

df <- dplyr::group_by(mtcars, cyl)
class(df)
#> [1] "grouped_df" "tbl_df"     "tbl"        "data.frame"
dplyr::group_data(df)
#> # A tibble: 3 × 2
#>     cyl       .rows
#>   <dbl> <list<int>>
#> 1     4        [11]
#> 2     6         [7]
#> 3     8        [14]
dplyr::group_vars(df)
#> [1] "cyl"

# 1 variable
group_labels(df)
#> # A tibble: 3 × 1
#>     cyl
#>   <dbl>
#> 1     4
#> 2     6
#> 3     8

# 2 variables
df <- dplyr::group_by(mtcars, cyl, vs)
group_labels(df)
#> # A tibble: 5 × 2
#>     cyl    vs
#>   <dbl> <dbl>
#> 1     4     0
#> 2     4     1
#> 3     6     0
#> 4     6     1
#> 5     8     0