Description Usage Arguments Value
Assign a unique group ID.
1 |
.data |
a data frame |
.keep |
a vector or list of vectors of column names in .data to concatenate. |
.numeric |
a logical value indicating if the function should returned a concatenation of the fields supplied (FALSE) or a numeric ID (TRUE) for each group in the supplied data. |
.sep |
the field seperator character. |
a vector representing a unique ID for each group of data.
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