all_pairs {gRbase}

Create all possible pairs

Description

Create all possible pairs of two character vectors.

Usage

all_pairs(x, y = character(0), sort = FALSE, result = "matrix")

names2pairs(x, y = NULL, sort = TRUE, result = "list")

Arguments

x, y

Character vectors.

sort

Logical.

result

A list or a matrix.

Details

NOTICE: If y is not NULL then x and y must be disjoint (no checks are made); otherwise pairs of identical elements wil also be obtained.

Author(s)

Søren Højsgaard, [e-mail]

Examples

x <- letters[1:4]
y <- letters[5:7]

all_pairs(x)
all_pairs(x, result="matrix")

all_pairs(x, y)
all_pairs(x, y, result="matrix")