Logical: add the variables in ... to any existing grouping
variables, or replace them (the default).
x
For ungroup(), a Crunch Dataset
Value
group_by() returns a GroupedCrunchDataset object (a
CrunchDataset with grouping annotations). ungroup() returns a
CrunchDataset.
Details
Note that group_by() only supports grouping on variables that exist in the
dataset, not ones that are derived on the fly. dplyr::group_by() supports
that by calling mutate() internally, but mutate is not yet supported in
crplyr.