vintersect: Perform intersection of two vectors, including counting...

In vecsets: Like Set Tools in 'Base' Package but Keeps Duplicate Elements

Perform intersection of two vectors, including counting repeated elements.

Description

Unlike the base::intersect function, if the vectors have repeated elements in common, the intersection returns as many of these elements as are in whichever vector has fewer of them.

Usage

vintersect(x, y, multiple = TRUE)

Arguments

x	A vector or an object which can be coerced to a vector
y	A vector or an object which can be coerced to a vector
multiple	Should repeated "multiple" items be returned? Default is TRUE; if set to FALSE, vintersect acts like the base::intersect function.

Value

A vector of the elements in the intersection of the two vectors. If multiple=FALSE is set, only unique values are returned. If the intersection is empty, an empty vector of same type is returned, mimicking base::intersect.

Author(s)

Carl Witthoft, with some code taken from Sven Hohenstein via Stack Overflow

See Also

intersect, the CRAN package sets

Examples

x <- c(1:5,3,3,3,2,NA,NA)
y<- c(2:5,4,3,NA)
vintersect(x,y)
vintersect(x,y,multiple=FALSE) 
intersect(x,y) #same as previous line

vecsets documentation built on May 29, 2024, 9:41 a.m.