setops: Set operations

In generics: Common S3 Generics not Provided by Base R Methods Related to Model Fitting

Set operations

Description

Union (union()), intersect (intersect()), difference (setdiff()), and equality (setequal()) for two vectors representing sets. Determine membership with is.element().

Usage

intersect(x, y, ...)

union(x, y, ...)

setdiff(x, y, ...)

setequal(x, y, ...)

is.element(el, set, ...)

Arguments

x, y	Vectors to combine.
...	Other arguments passed on to methods.
el, set	Element and set to compare.

Details

These functions override the set functions provided in base to make them generic so that packages can provide methods for different data types. The default methods call the base versions.

Value

For union(), intersect(), and setdiff(), a vector with all duplicate removed.

For setequal() and is.element(), a logical TRUE or FALSE.'

Methods

intersect()

\Sexpr[stage=render,results=rd]{generics:::methods_rd("intersect")}

union()

\Sexpr[stage=render,results=rd]{generics:::methods_rd("union")}

setdiff()

\Sexpr[stage=render,results=rd]{generics:::methods_rd("setdiff")}

setequal()

\Sexpr[stage=render,results=rd]{generics:::methods_rd("setequal")}

is.element()

\Sexpr[stage=render,results=rd]{generics:::methods_rd("is.element")}

Examples

intersect(1:5, 4:8)
union(1:5, 4:8)

setdiff(1:5, 4:8)
setdiff(4:8, 1:5)

generics documentation built on July 6, 2022, 1:08 a.m.