This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.


shell_layout(G, nlist=None, dim=2, scale=1)[source]

Position nodes in concentric circles.

Parameters :

G : NetworkX graph

nlist : list of lists

List of node lists for each shell.

dim : int

Dimension of layout, currently only dim=2 is supported

scale : float

Scale factor for positions

Returns :

dict :

A dictionary of positions keyed by node


This algorithm currently only works in two dimensions and does not try to minimize edge crossings.


>>> G=nx.path_graph(4)
>>> shells=[[0],[1,2,3]]
>>> pos=nx.shell_layout(G,shells)