graphvizgraph-visualizationpygraphviz

Graphviz unnecessarily long edges / distances between nodes

I have a tree which I plot with Graphviz, however the distances between the nodes is very large and not efficiently used. Can this be improved? enter image description here

I tried playing with mindist, splines and overlap, but nothing seems to work. Is this the best graphviz is able to do?

The data:

https://pastebin.com/JUC7GhLV

The code:

import json
import pygraphviz as pgv
# Read data from the "graph1.json" file
with open("graph2.json") as f:
    edges_data = json.load(f)

# Create a new directed graph
graph = pgv.AGraph(strict=False, directed=True)

# Add nodes and edges to the graph based on the JSON data
for edge in edges_data:
    graph.add_node(edge["ID"])
    if edge["ParentID"]:
        graph.add_edge(edge["ParentID"], edge["ID"])

graph_attrs = {
    'dpi': 50, 
    'root': 10000185, 
    'mindist': 0.1
#    'splines': False,   # false 
#    'overlap':'scale'    # false
}

graph.graph_attr.update(graph_attrs)
graph.draw("output_graph.svg", prog="circo", format="svg")
Solution

  • You have probably hit this circo bug:

    Trying to find a circo work-around will probably not lead to success (unless you feel lucky)
    Try the other layout engines, twopi, neato, fdp, and dot