creates a new UpSet set combination structure
name of the set combination
the elements of the set combination
the set combination type (intersection,distinctIntersection,union,combination)
the sets this combination is part of
the cardinality of the set, default to length(elems)
the color of the set
the set object
asCombination("a", c(1, 2, 3))
#> $name
#> [1] "a"
#>
#> $type
#> [1] "intersection"
#>
#> $elems
#> [1] 1 2 3
#>
#> $color
#> NULL
#>
#> $cardinality
#> [1] 3
#>
#> $setNames
#> $setNames[[1]]
#> [1] "a"
#>
#>
#> $degree
#> [1] 1
#>
#> attr(,"class")
#> [1] "upsetjs_combination"