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We no need to add vertex if it exists #25

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We no need to add vertex if it exists #25

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14 changes: 11 additions & 3 deletions N2G/plugins/diagrams/N2G_DrawIO.py
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Original file line number Diff line number Diff line change
Expand Up @@ -503,9 +503,17 @@ def layout(self, algo="kk", ig_kwargs=None, **kwargs):
# populate igraph with nodes and edges from object tags
for item in self.current_root.iterfind("./object"):
# add edges, item[0] refernece to object's mxCell child tag
if item[0].get("source") and item[0].get("target"):
src = igraph_graph.add_vertex(name=item[0].get("source"))
tgt = igraph_graph.add_vertex(name=item[0].get("target"))
src = item[0].get("source")
tgt = item[0].get("target")
if src and tgt:
try:
src = igraph_graph.vs.find(src)
except ValueError:
src = igraph_graph.add_vertex(name=src)
try:
tgt = igraph_graph.vs.find(tgt)
except ValueError:
tgt = igraph_graph.add_vertex(name=tgt)
igraph_graph.add_edge(source=src, target=tgt)
# add nodes
else:
Expand Down