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add build graph networkx #91

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add build graph networkx #91

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27 changes: 27 additions & 0 deletions hiddenlayer/graph.py
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Original file line number Diff line number Diff line change
Expand Up @@ -354,6 +354,33 @@ def build_dot(self):
dot.edge(str(a), str(b), label)
return dot

def build_nx(self):
"""Generate a Networkx graph.

Returns a Networkx Digraph object.
"""
import networkx as nx

# Build GraphViz Digraph
G = nx.DiGraph()
nodes = []
for k, n in self.nodes.items():
label = "{} ".format(n.title)
if n.caption:
label += "{} ".format(n.caption)
if n.repeat > 1:
label += "x{}".format(n.repeat)
label = " " + label + " "
nodes.append((str(k), {'label': label, 'shape': 'box'}))
G.add_nodes_from(nodes)

for a, b, label in self.edges:
if isinstance(label, (list, tuple)):
label = "x".join([str(l or "?") for l in label])
G.add_edge(str(a), str(b), label=label)
# dot.edge(str(a), str(b), label)
return G

def _repr_svg_(self):
"""Allows Jupyter notebook to render the graph automatically."""
return self.build_dot()._repr_svg_()
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