Generate a unique id for each group
group_indices(.data, ...)
| .data | a tbl |
|---|---|
| ... | Variables to group by. All tbls accept variable names. Some tbls will accept functions of variables. Duplicated groups will be silently dropped. |
Other grouping functions: group_by_all,
group_by, group_keys,
group_map, group_nest,
group_rows, group_size,
group_trim, groups
group_indices(mtcars, cyl)#> [1] 2 2 1 2 3 2 3 1 1 2 2 3 3 3 3 3 3 1 1 1 1 3 3 3 3 1 1 1 3 2 3 1