Draw concentric circles

draw_circle(col = "#00BFFF", use = "focus", max.circle)

Arguments

col

color of circles

use

one of 'focus' or 'cent'

max.circle

if use = 'focus' specifies the number of circles to draw

Value

concentric circles around origin

Details

this function is best used with a concentric layout such as layout_with_focus and layout_with_centrality.

Examples

library(igraph) library(ggraph) g <- sample_gnp(10,0.4) if (FALSE) { ggraph(g,layout = "centrality",centrality = degree(g))+ draw_circle(use = "cent")+ geom_edge_link()+ geom_node_point(shape = 21,fill = "grey25",size = 5)+ theme_graph()+ coord_fixed() }