annotate concentric circles

annotate_circle(cent, col = "#00BFFF", format = "", pos = "top", text_size = 3)

Arguments

cent: centrality scores used for layout
col: color of text
format: either empty string or 'scientific'
pos: position of text ('top' or 'bottom')
text_size: font size for annotations

Value

annotated concentric circles around origin

Details

this function is best used with layout_with_centrality together with draw_circle.

Examples

library(igraph)
#> 
#> Attaching package: ‘igraph’
#> The following objects are masked from ‘package:stats’:
#> 
#>     decompose, spectrum
#> The following object is masked from ‘package:base’:
#> 
#>     union
library(ggraph)
#> Loading required package: ggplot2

g <- sample_gnp(10,0.4)
if (FALSE) {
ggraph(g,layout = "centrality",centrality = closeness(g))+
 draw_circle(use = "cent")+
 annotate_circle(closeness(g),pos = "bottom",format = "scientific")+
 geom_edge_link()+
 geom_node_point(shape=21,fill="grey25",size=5)+
 theme_graph()+
 coord_fixed()
}