This selection helpers matches grouping variables. It can be used
in select()
or vars()
selections.
group_cols(vars = NULL, data = NULL)
Deprecated; please use data instead.
For advanced use only. The default NULL
automatically
finds the "current" data frames.
groups()
and group_vars()
for retrieving the grouping
variables outside selection contexts.
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))
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