countIntersect: Cardinality of set intersections.

In tsieger/tsiMisc: Miscelaneous utility functions, mostly related to exploratory statistical analysis

Cardinality of set intersections.

Description

Given n sets, countIntersect computes the number of elements being shared by the individual n*(n-1)/2 pairs of sets.

Usage

countIntersect(..., logical = FALSE)

Arguments

...	several numeric or character vectors to intersect; alternatively, a data frame or matrix can be supplied, whose columns will be treated as individual sets
logical	should

Value

A matrix of size n*n. If logical==FALSE, on the diagonal, there are numbers of elements in each set, and at position i,j there is the number of elements in set j shared with set i. If logical==TRUE, on the diagonal, there are numbers of TRUEs in each set, and at position i,j there is the number of TRUEs shared by sets i and j.

Author(s)

Tomas Sieger

Examples

countIntersect(1:2,1:3)
countIntersect(c('a','b'),c('a','c'),c('b','c'))

tsieger/tsiMisc documentation built on Dec. 14, 2024, 3:23 p.m.