nth_group: Extract nth (or multiple sub-) group

In espinielli/scrap: A collection of useful (for me) snippets of code

Extract nth (or multiple sub-) group

Description

Inspired by this SO answer.

Usage

nth_group(x, n)

Arguments

x	grouped data frame
n	index(es) of the group(s) to extract

Value

subset of groups from the input dataframe

Examples

## Not run: 
# extract first group
mtcars %>% group_by(cyl) %>% nth_group(1)

# extract first and third group
mtcars %>% group_by(cyl) %>% nth_group(c(1,3))

## End(Not run)

espinielli/scrap documentation built on Dec. 9, 2023, 11:25 p.m.