Take the dual of an affiliation network

This function obtains the dual of an affiliation network, in which the actors and events have swapped roles. To do this, it negates the logical values of the node type attribute and reorders the node ids accordingly.

Usage

dualize(graph)

dual_an(graph)

dual.an(graph)

Arguments

graph

An affiliation network.

Value

The input graph with the "type" attribute logically negated.

See also

Other modal queries and manipulations: mode_addition, mode_counts, modes, schedule()

Examples

data(women_clique)
( tab <- table(V(women_clique)$type) )
#> 
#> FALSE  TRUE 
#>     5     5 
( proj <- actor_projection(dualize(women_clique)) )
#> IGRAPH 12e2341 UNW- 5 9 -- 
#> + attr: name (v/c), weight (e/n)
#> + edges from 12e2341 (vertex names):
#> [1] Bridge--Movies   Bridge--Dance    Bridge--Dinner   Bridge--Visiting
#> [5] Dinner--Visiting Dinner--Movies   Dinner--Dance    Movies--Dance   
#> [9] Dance --Visiting
vcount(proj) == tab[2]
#> TRUE 
#> TRUE