Convert a List of Sets to a Binary Matrix

Convert a List of Sets to a Binary Matrix

list_to_matrix(lt, universal_set = NULL)

Arguments

lt	A list of vectors.
universal_set	The universal set.

Details

It converts the list which have m sets to a binary matrix with n rows and m columns where n is the size of universal set.

Examples

set.seed(123)
lt = list(a = sample(letters, 5),
          b = sample(letters, 10),
          c = sample(letters, 15))
list_to_matrix(lt)
#>   a b c
#> c 1 1 0
#> d 0 0 1
#> e 0 1 1
#> g 0 0 1
#> h 0 0 1
#> i 0 1 1
#> j 1 0 1
#> k 0 1 1
#> l 0 0 1
#> m 0 0 1
#> n 1 1 1
#> o 1 0 0
#> q 0 0 1
#> r 0 1 0
#> s 1 1 1
#> t 0 1 0
#> v 0 1 1
#> w 0 1 0
#> x 0 0 1
#> y 0 0 1
list_to_matrix(lt, universal_set = letters)
#>   a b c
#> a 0 0 0
#> b 0 0 0
#> c 1 1 0
#> d 0 0 1
#> e 0 1 1
#> f 0 0 0
#> g 0 0 1
#> h 0 0 1
#> i 0 1 1
#> j 1 0 1
#> k 0 1 1
#> l 0 0 1
#> m 0 0 1
#> n 1 1 1
#> o 1 0 0
#> p 0 0 0
#> q 0 0 1
#> r 0 1 0
#> s 1 1 1
#> t 0 1 0
#> u 0 0 0
#> v 0 1 1
#> w 0 1 0
#> x 0 0 1
#> y 0 0 1
#> z 0 0 0