graphviz

name	graphviz
description	Graph and network visualization via Graphviz. Use for rendering directed/undirected graphs, dependency trees, network topologies, org charts, and any node-edge diagram from DOT language.
metadata	{"version":"1.0.0","displayName":"Graphviz","author":"gremlin","category":"data","icon":"diagram","tags":["graph","visualization","diagram","network","dot"],"install":"which dot || (apt-get update && apt-get install -y graphviz)\n","allowedCommands":["dot","neato","fdp","circo","twopi","sfdp"]}

Graphviz

You have access to Graphviz for rendering graph visualizations from DOT language.

Usage

Write a .dot file, then render:

dot -Tpng graph.dot -o graph.png
dot -Tsvg graph.dot -o graph.svg
dot -Tpdf graph.dot -o graph.pdf

Layout Engines

• dot — hierarchical/layered (default, best for DAGs and trees)
• neato — spring model (undirected graphs)
• fdp — force-directed (large undirected graphs)
• circo — circular layout
• twopi — radial layout
• sfdp — scalable force-directed (very large graphs)

Use as: neato -Tpng graph.dot -o graph.png

Tips

• Pipe from stdin: echo 'digraph { A -> B -> C }' | dot -Tpng -o graph.png
• Output formats: png, svg, pdf, jpg, eps, json (for programmatic use).
• Use rankdir=LR in the graph for left-to-right layout instead of top-to-bottom.
• Use shape=record or shape=box for structured nodes.
• Use style=filled, fillcolor="#..." for colored nodes.
• Use subgraph cluster_name { ... } for grouped/boxed subgraphs (prefix must be cluster_).
• Use fontname="Helvetica" for cleaner text rendering.
• For large graphs, use sfdp instead of dot — it scales much better.
• Debug layout issues with -Tcanon to see the parsed canonical DOT output.