Layout with group
igraph
group name (default:v_group)
group_order
group2 name, will order nodes in each group according to group2_order
group2_order
the space between each arc, default: pi/4
for surface-regular, defalut 0
scale with the node number in each group
Type of distribution: "random", "regular"
"surface", "boundary"
Optional curved attribute for coors
coors
Other g_layout:
g_layout_nice()
,
g_layout_polygon()
,
g_layout()