Graphviz

lastmod 2025-07-02created 2016-04-2718 edits

Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains.

Shape

• Hilfe:Graphviz – ZUM-Wiki

Simple example

digraph MainLoop {
now_time -> duration -> pre_time -> lag -> check_lag;
check_lag -> update_loop;
check_lag -> render;
update_loop -> render;
}

Bidirectional edges

• Stackoverflow - Dot graph language - how to make bidirectional edges automatically?

strict digraph graphName {
A->B [dir="both"]
}

OR:

strict digraph graphName {
concentrate=true
A->B
B->A
}

List of UML Software

See also

• Doxygen
• diagrams (Haskell)
• Mermaid
• UML
• Typograms - a lightweight text-based image format for representing diagrams in technical documentation
• OpenFLOW - a tool for quickly creating beautiful infrastructure diagrams locally

Favorite site

• Graphviz web sitse
• Wikipedia (en) Graphviz

Documentation

• Node, Edge and Graph Attributes
• Arrow Shapes

Web Interface

• WebGraphviz is Graphviz in the Browser

How to use

• [Recommended] Introduction to Graphviz
• Okjungsoo's house - Graphviz
• Drawing Graphs using Dot and Graphviz
• GraphViz for discrete math students
• Drawing pictures with graphviz
• Flow charts in code: enter graphviz and the "dot" language

C/C++ API

• Drawing graph images with Graphviz in C++

Online demo

• GraphvizFiddle web site - GraphvizFiddle draws DOT language directed graphs.
• [Recommended] Text to diagram (tool comparison: D2 vs MermaidJS vs Graphviz vs PlantUML)