Compute set intersections and sizes for an UpSet-style plot

Enumerates every combination of the supplied sets (at every order from single sets up to all of them), and sizes each one. Under intersection_assignment_type = "upset" a member is only counted at its highest-order intersection (as in the original UpSet), so lower-order combinations only report members not already claimed by a higher one; under "all" a member is counted in every intersection it belongs to.

Usage

upset_calculate_intersections(
  sets,
  show_empty_intersections = TRUE,
  intersection_assignment_type = "upset"
)

Arguments

sets

A named list of character vectors, one per set (e.g. gene identifiers)

show_empty_intersections

Include intersections/set combinations with zero members?

intersection_assignment_type

'upset' or 'all', see above

Value

output A list with combinations (a list of integer vectors, each giving the positions in sets making up one intersection) and intersections (the matching sizes), ordered by size, descending