networkx.drawing.nx_pylab.draw_networkx_edges¶

draw_networkx_edges(G, pos, edgelist=None, width=1.0, edge_color='k', style='solid', alpha=1.0, arrowstyle='-|>', arrowsize=10, edge_cmap=None, edge_vmin=None, edge_vmax=None, ax=None, arrows=True, label=None, node_size=300, nodelist=None, node_shape='o', **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, or array of floats) – 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. Note: Arrows will be the same color as edges.
arrowstyle (str, optional (default=’-|>’)) – For directed graphs, choose the style of the arrow heads. See :py:class: matplotlib.patches.ArrowStyle for more options.
arrowsize (int, optional (default=10)) – For directed graphs, choose the size of the arrow head head’s length and width. See :py:class: matplotlib.patches.FancyArrowPatch for attribute mutation_scale for more info.
label ([None| string]) – Label for legend

Returns:

matplotlib.collection.LineCollection – LineCollection of the edges
list of matplotlib.patches.FancyArrowPatch – FancyArrowPatch instances of the directed edges
Depending whether the drawing includes arrows or not.

Notes

For directed graphs, arrows are drawn at the head end. Arrows can be turned off with keyword arrows=False. Be sure to include node_size as a keyword argument; arrows are drawn considering the size of nodes.

Examples

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

>>> G = nx.DiGraph()
>>> G.add_edges_from([(1, 2), (1, 3), (2, 3)])
>>> arcs = nx.draw_networkx_edges(G, pos=nx.spring_layout(G))
>>> alphas = [0.3, 0.4, 0.5]
>>> for i, arc in enumerate(arcs):  # change alpha values of arcs
...     arc.set_alpha(alphas[i])

Also see the NetworkX drawing examples at https://networkx.org/documentation/latest/auto_examples/index.html