group_cols: Select grouping variables

In dplyr: A Grammar of Data Manipulation

Select grouping variables

Description

This selection helpers matches grouping variables. It can be used in select() or vars() selections.

Usage

group_cols(vars = NULL, data = NULL)

Arguments

vars
data	For advanced use only. The default NULL automatically finds the "current" data frames.

See Also

groups() and group_vars() for retrieving the grouping variables outside selection contexts.

Examples

gdf <- iris |> group_by(Species)
gdf |> select(group_cols())

# Remove the grouping variables from mutate selections:
gdf |> mutate_at(vars(-group_cols()), `/`, 100)
# -> No longer necessary with across()
gdf |> mutate(across(everything(), ~ . / 100))

dplyr documentation built on Feb. 3, 2026, 9:08 a.m.