Revise grouping structure when calling summarise() - Githubissues

nathaneastwood / poorman

A poor man's dependency free grammar of data manipulation

https://nathaneastwood.github.io/poorman/

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Revise grouping structure when calling summarise() #57

Closed nathaneastwood closed 3 years ago

nathaneastwood commented 4 years ago

This is the .groups argument to summarise(). The user should be able to pass:

"drop_last": dropping the last level of grouping.
"drop": All levels of grouping are dropped.
"keep": Same grouping structure as .data.

When .groups is not specified, it is chosen based on the number of rows of the results:

If all the results have 1 row, you get "drop_last".
If the number of rows varies, you get "keep".