Draw interactive NetworkX graphs with Altair

Overview

nx_altair

Draw NetworkX graphs with Altair

Gitter chat

nx_altair offers a similar draw API to NetworkX but returns Altair Charts instead.

If you'd like to contribute, join the Gitter chatroom and share your ideas! Also, checkout the to-do list below.

Examples

If you'd like to start playing with nx_altair, download this notebook!

Simple graph

import networkx as nx
import nx_altair as nxa

# Generate a random graph
G = nx.fast_gnp_random_graph(n=20, p=0.25)

# Compute positions for viz.
pos = nx.spring_layout(G)

# Draw the graph using Altair
viz = nxa.draw_networkx(G, pos=pos)

# Show it as an interactive plot!
viz.interactive()

Leverage Altair

Customize the visualization

nx_altair also supports many of the same arguments from NetworkX for styling your network--with an Altair twist! Map visualization attributes in a declarative manner.

import numpy as np

# Add weights to nodes and edges
for n in G.nodes():
    G.nodes[n]['weight'] = np.random.randn()

for e in G.edges():
    G.edges[e]['weight'] = np.random.uniform(1, 10)


# Draw the graph using Altair
viz = nxa.draw_networkx(
    G, pos=pos,
    node_color='weight',
    cmap='viridis',
    width='weight',
    edge_color='black',
)

# Show it as an interactive plot!
viz.interactive()

Install

To install from PyPI:

pip install nx_altair

To install for development, clone this repos and install using pip

pip install -e .

Contributing

We welcome pull requests! If you find a bug, we'd love for you to submit a PR. If you're not sure how to do that, check out this simple guide.

If you have a feature request, please open an issue or submit a PR!

Todo list

A list of things to-do (good ideas for PRs).

  • Add draw method that mirrors networkx (easy)
  • Node color scale vmix, vmax (easy)
  • Edge color scale vmix, vmax (easy)
  • Node labels (medium)
  • Edge labels (medium)
  • Mouse-hover interactivity (medium)
  • Arrows for edges (hard)
  • Support for large (>1000 edge) networks (hard)
  • Force-directed interactivity (very hard---beyond altair's current support).
Owner
Zachary Sailer
@jupyter core developer, @jupyter Distinguished Contributor
Zachary Sailer
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