Learn R Programming

IFC (version 0.2.1)

group: Groups Combination

Description

Combines data.frame groups into a unique one

Usage

group(df, collapse = ".", keepNAlevels = FALSE, ...)

Value

a named list containing row indices of grouping combinations.

Arguments

df

a data.frame whose columns represent grouping factor.

collapse

a string used to collapse groups levels.

keepNAlevels

whether to keep NA levels resulting from groups merging

...

other arguments to be passed.