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Dynamic affiliation network structure

dynamic_an.Rd

An affiliation network is dynamic, for present purposes, if its event nodes have time stamps, recorded as a numeric vertex attribute "time" in non-decreasing order.

Usage

is_dynamic_an(graph)

is.dyn(graph)

as_dynamic_an(graph, use_attr = NULL)

Arguments

graph

An affiliation network.

use_attr

Character; the vertex attribute to coerce to numeric if necessary and use as the "time" attribute. If NULL, the default, time takes the values seq(event_count(graph)), reflecting the order of the event node IDs.

Value

The input graph with a new "time" vertex attribute and its event nodes permuted to respect this attribute.

See also

Other network testing and coercion: affiliation_network

Examples

data(women_group)
is_dynamic_an(women_group)
#> [1] TRUE
data(women_clique)
is_dynamic_an(women_clique)
#> [1] FALSE
as_dynamic_an(women_clique)
#> IGRAPH 8683189 UN-B 10 14 -- 
#> + attr: type (v/l), name (v/c), time (v/n)
#> + edges from 8683189 (vertex names):
#>  [1] Miss A--Bridge   Miss A--Movies   Miss A--Dance    Miss B--Movies  
#>  [5] Miss B--Dance    Miss C--Bridge   Miss C--Dinner   Miss C--Visiting
#>  [9] Miss D--Bridge   Miss D--Dinner   Miss D--Movies   Miss E--Dinner  
#> [13] Miss E--Dance    Miss E--Visiting
data(nmt_meetings)
nmt_meetings <- set_event_attr(
  nmt_meetings, "meet",
  value = gsub("meet", "", V2(nmt_meetings)$name)
)
as_dynamic_an(nmt_meetings, use_attr = "meet")
#> IGRAPH 602a2ab UN-B 46 64 -- 
#> + attr: type (v/l), name (v/c), meet (v/c), time (v/n)
#> + edges from 602a2ab (vertex names):
#>  [1] Abdullah Sunata  --meet12 Abu Dujanah      --meet1 
#>  [3] Abu Dujanah      --meet2  Abu Fida         --meet5 
#>  [5] Abu Fida         --meet6  Abu Fida         --meet13
#>  [7] Adung            --meet5  Ahmad Rofiq Ridho--meet11
#>  [9] Ahmad Rofiq Ridho--meet12 Ahmad Rofiq Ridho--meet14
#> [11] Ahmad Rofiq Ridho--meet15 Ahmad Rofiq Ridho--meet16
#> [13] Ahmad Rofiq Ridho--meet18 Akram            --meet17
#> [15] Asep Jaja        --meet12 Azhari Husin     --meet1 
#> + ... omitted several edges