dplyr (version 0.5.0)

group_size: Calculate group sizes.

Description

Calculate group sizes.

Usage

group_size(x)
n_groups(x)

Arguments

x

a grouped tbl

Examples

if (require("nycflights13")) {

by_day <- flights %>% group_by(year, month, day)
n_groups(by_day)
group_size(by_day)

by_dest <- flights %>% group_by(dest)
n_groups(by_dest)
group_size(by_dest)
}