Circular layouts

Layouts can be linear and circular.

coord_polar() changes the coordinate system, affecting the edges

ggraph(luv_graph, layout = 'dendrogram', circular = TRUE) + 
  geom_edge_link() + 
  coord_fixed()

ggraph(luv_graph, layout = 'dendrogram') + 
  geom_edge_link() + 
  coord_polar() + 
  scale_y_reverse()