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Draw concentric circles

Source: R/annotate_functions.R
draw_circle.Rd

Draw concentric circles

Usage

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)
g <- sample_gnp(10, 0.4)

if (FALSE) { # \dontrun{
library(ggraph)
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()
} # }