arranges nodes in concentric circles according to a centrality index.
igraph object
centrality scores
logical. should centrality scores be scaled to \([0,100]\)? (Default: TRUE)
number of iterations during stress optimization
stopping criterion for stress optimization
numeric vector. increasing sequence of coefficients to combine regular stress and constraint stress. See details.
not used
matrix of xy coordinates
The function optimizes a convex combination of regular stress and a constrained stress function which forces
nodes to be arranged on concentric circles. The vector tseq
is the sequence of parameters used for the convex combination.
In iteration i of the algorithm \(tseq[i]\) is used to combine regular and constraint stress as \((1-tseq[i])*stress_{regular}+tseq[i]*stress_{constraint}\). The sequence must be increasing, start at zero and end at one. The default setting should be a good choice for most graphs.
The layout_igraph_* function should not be used directly. It is only used as an argument for plotting with 'igraph'. 'ggraph' natively supports the layout.
Brandes, U., & Pich, C. (2011). More flexible radial layout. Journal of Graph Algorithms and Applications, 15(1), 157-173.
library(igraph)
library(ggraph)
g <- sample_gnp(10,0.4)
if (FALSE) {
ggraph(g,layout="centrality",centrality = closeness(g))+
draw_circle(use = "cent")+
geom_edge_link0()+
geom_node_point(shape = 21,fill = "grey25",size = 5)+
theme_graph()+
coord_fixed()
}