Transform Excel data into professional Graphviz diagrams effortlessly.
This repository is your go-to collection of practical, ready-to-use examples for the Relationship Visualizer — the powerful Excel spreadsheet that turns tabular data into stunning Graphviz visualizations.
Whether you're mapping org charts, dependencies, hierarchies, business processes, data classifications, or complex networks, these examples show real-world patterns using SQL queries, styling tricks, and every major Graphviz layout engine.
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- 🌐 Main Website & Documentation: exceltographviz.com — tutorials, guides, and more
- 📥 Latest Release (v10.1.0 — Feb 2026): GitHub Releases — what's new & download assets
- ⬇️ Download Relationship Visualizer: SourceForge (Latest ZIP) — free tool, ~81 MB
- 📜 Full Changelog: exceltographviz.com/changelog — detailed version history
- 🔧 Core Tool Repository: github.com/jjlong150/ExcelToGraphviz — source, issues, and contributions
- ☕ Support / Buy Me a Coffee: buymeacoffee.com/exceltographviz — optional appreciation if this tool helps your work!
Find the perfect layout style for your diagram in seconds:
| Engine | Best For | Folder |
|---|---|---|
| dot | Trees, hierarchies, org charts, dependencies | ./dot/ |
| neato | Organic, force-directed networks | ./neato/ |
| fdp | Medium-sized undirected graphs | ./fdp/ |
| sfdp | Large-scale networks & force layouts | ./sfdp/ |
| twopi | Radial, concentric, layered diagrams | ./twopi/ |
| circo | Circular, ring, cyclic structures | ./circo/ |
| osage | Clustered, partitioned, grouped layouts | ./osage/ |
| patchwork | Treemap-style, space-filling hierarchies | ./patchwork/ |
Each engine folder includes:
- Ready-to-open Excel workbooks (.xlsx)
- Scenario description in a mini-README
- SQL patterns (including recursive TREE QUERY examples)
- Generated Graphviz output (SVG, PNG)
- Styling, layout tweaks, and modeling notes
Here's a quick taste of what these examples produce:
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|---|
| Hierarchical org chart using dot layout |
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| Force-directed network using neato |
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|---|---|
| Country-specific Radial graphs using twopi |
- Real SQL queries powering node/edge generation (enhanced in v10.1.0 with concatenation modes for cleaner detail aggregation)
- Turning flat Excel tables (HR exports, BOMs, process lists, etc.) into rich, dynamic graphs
- Recursive hierarchies, multi-level dependencies, filtered/parameterized views
- Advanced node & edge styling for maximum clarity and visual impact
- Best practices for Excel-to-Graphviz data modeling workflows
- Techniques inspired by enterprise exports (all datasets are synthetic/fictional)
These aren't just pretty pictures — they're reusable templates that teach you how to:
- Model complex relationships directly in Excel
- Leverage SQL + Graphviz for dynamic, data-driven diagrams
- Avoid common pitfalls in graph layout and readability
Analysts, data modelers, architects, process engineers, HR teams, IT documentation specialists — anyone who needs to visualize relationships, dependencies, or structures that live in spreadsheets.
New examples, better SQL patterns, styling improvements, or additional engines? Pull requests are welcome! See CONTRIBUTING.md for guidelines."
If you've built an interesting diagram type or technique with Relationship Visualizer, please share it here — it'll help the whole community.
MIT License — free to use, modify, and share.
Start exploring the engine folders above, download the latest v10.1.0 from exceltographviz.com, or jump straight to the core repo to get diagramming today!