Exporting Layout Positions for a Graph Using NetworkX

Question

After generating x/y layout coordinates for a graph in NetworkX, how do I export the graph, along with node positions, as part of the node definition using something like Gr

Answer 1

The layout algorithms don't set node attributes (but they should). Here is how to set the attributes:

In [1]: import networkx as nx

In [2]: G=nx.path_graph(4)

In [3]: pos=nx.spring_layout(G)

In [4]: nx.set_node_attributes(G,'pos',pos)

In [5]: G.node
Out[5]: 
{0: {'pos': array([ 0.,  0.])},
 1: {'pos': array([ 0.32267963,  0.03340727])},
 2: {'pos': array([ 0.67729057,  0.07011044])},
 3: {'pos': array([ 1.        ,  0.10350174])}}