group_by: group_by a data.frame by chosen columns

In pv71u98h1/m61r: Package About Data Manipulation in Pure Base R

group_by a data.frame by chosen columns

Description

Group a data.frame by chosen columns

Usage

group_by_(df, group = NULL)

Arguments

df	data.frame
group	formula that describes the group

Value

The function returns a list. Each element of the list is a subset of data frame df. Subset is determined by variables given in group. Each data frame get the following properties:

• Columns are not modified.

• Only rows corresponding to the subset.

• Data frame attributes are preserved.

Examples

tmp <- group_by_(CO2,~c(Type,Treatment))

tmp[[1]]

pv71u98h1/m61r documentation built on Oct. 20, 2024, 6:29 p.m.