group_cols: Select grouping variables

In hadley/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	Deprecated; please use data instead.
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))

hadley/dplyr documentation built on Feb. 16, 2024, 8:27 p.m.