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

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

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

Example output

[1]  2  3  3  4  5 NA
[1]  2  3  4  5 NA
[1]  2  3  4  5 NA

vecsets documentation built on March 8, 2021, 1:13 a.m.