statar (version 0.1.3)

find_duplicates: returns duplicated rows

Description

returns duplicated rows

Usage

find_duplicates(x, ..., gen = "N")
find_duplicates_(x, vars, gen = "N")

Arguments

x

a data.table

...

Variables to group by. Default is the key, or everything is the data.table is not keyed.

gen

A character that specifies the name of a new variable with the number of duplicates. Default to "N".

vars

Used to work around non-standard evaluation.

Value

• a data.table with groups that have duplicates.

Examples

library(data.table)
DT <- data.table(a = rep(1:2, each = 3), b = 1:6)
find_duplicates(DT, a)