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


draw_networkx_edges(G, pos, edgelist=None, width=1.0, edge_color='k', style='solid', alpha=None, edge_cmap=None, edge_vmin=None, edge_vmax=None, ax=None, arrows=True, label=None, **kwds)[source]

Draw the edges of the graph G.

This draws only the edges of the graph G.

Parameters :

G : graph

A networkx graph

pos : dictionary

A dictionary with nodes as keys and positions as values. Positions should be sequences of length 2.

edgelist : collection of edge tuples

Draw only specified edges(default=G.edges())

width : float

Line width of edges (default =1.0)

edge_color : color string, or array of floats

Edge color. Can be a single color format string (default=’r’), or a sequence of colors with the same length as edgelist. If numeric values are specified they will be mapped to colors using the edge_cmap and edge_vmin,edge_vmax parameters.

style : string

Edge line style (default=’solid’) (solid|dashed|dotted,dashdot)

alpha : float

The edge transparency (default=1.0)

edge_ cmap : Matplotlib colormap

Colormap for mapping intensities of edges (default=None)

edge_vmin,edge_vmax : floats

Minimum and maximum for edge colormap scaling (default=None)

ax : Matplotlib Axes object, optional

Draw the graph in the specified Matplotlib axes.

arrows : bool, optional (default=True)

For directed graphs, if True draw arrowheads.

label : [None| string]

Label for legend

Returns :


\(LineCollection\) of the edges


For directed graphs, “arrows” (actually just thicker stubs) are drawn at the head end. Arrows can be turned off with keyword arrows=False. Yes, it is ugly but drawing proper arrows with Matplotlib this way is tricky.


>>> G=nx.dodecahedral_graph()
>>> edges=nx.draw_networkx_edges(G,pos=nx.spring_layout(G))

Also see the NetworkX drawing examples at http://networkx.lanl.gov/gallery.html