group_sum_id: Compute a grouped sum

Description Usage Arguments Examples

View source: R/sum.R

Description

Compute a grouped sum

Usage

1

Arguments

x

A numeric vector

g

A vector defining grouping levels

Examples

1
2
group_sum_id(mtcars$cyl, mtcars$vs)
group_sum_id(mtcars$cyl, mtcars[c("vs", "am")])

hadley/grouperise documentation built on Nov. 20, 2019, 8:50 a.m.