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Get all possible pairs from vector

Source: R/helpers.R
get_all_pairs.Rd

This function returns a matrix of all pairs of values in a vector.

Usage

get_all_pairs(vec, direction = c("direct", "double", "reverse"))

Arguments

vec

Vector

direction

  • direct (default) Like permutation: (a,b) and (b,a) are treated as the same pair and only one is returned

  • double Like combination: (a,b) and (b,a) are treated as distinct pairs

  • reverse Like direct, but the two columns are reversed

Value

Two-column matrix of pairs

Examples

get_all_pairs(c("x1", "x2", "y1", "y2"))
#>    [,1] [,2]
#> 4  "x1" "x2"
#> 6  "x1" "y1"
#> 7  "x2" "y1"
#> 10 "x1" "y2"
#> 11 "x2" "y2"
#> 13 "y1" "y2"