🌍 SODREPO – Spatial Open Data Regions & Portals

SODREPO is an interactive, map-based Single Page Application for visualizing, filtering, and comparing Open Data portals across multiple administrative levels (ADM0–ADM3). The tool combines geographic visualization with rich metadata and usability-focused UI elements for exploration, benchmarking, and analysis. The tool is published through conferences and is an scientific approach.

Developed and maintained by the SODIC Research Group (Semantic & Open Data Innovation Chemnitz) at TU Chemnitz.

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✨ Features

• Interactive MapLibre GL map showing spatial Open Data infrastructure
• Hover/Click mode for exploring regions with linked portals
• Joyride-based onboarding guide and Welcome Banner
• Filters by portal type, administrative level, and SPARQL/MQA support
• Search function across portal name and location
• Download options: Filtered portal CSV, full JSON dataset, current map view as PNG
• Portal comparison mode (up to 4 portals)
• Statistical overview of current portal distribution
• Hierarchical arrow visualization for regional relations (ADM0 → ADM3)
• Dark mode toggle, dynamic layer visibility control

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🗺️ Use Cases

• Researchers exploring the spatial distribution of Open Data
• Policy analysts evaluating digital openness on different government levels
• Developers and civic tech enthusiasts identifying accessible datasets
• Government stakeholders benchmarking transparency efforts

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⚙️ Tech Stack

• Frontend: React + Vite, MapLibre GL JS, Joyride, Turf.js, HTML2Canvas
• Backend: None (static SPA)
• Geodata: GeoBoundaries, manually matched ADM-levels
• Metadata: Manually curated JSON files for portals and hierarchy relations

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🚀 Getting Started

git clone https://github.com/SODIC-research/SODREPO.git
cd SODREPO
npm install
npm run dev

All boundaries and metadata are available in public/geo/ and public/data/.

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🌐 Live Demo

🚀 https://rambarz.github.io

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📂 Project Structure

/public/
  /geo/           ← GeoJSON boundaries per ADM level
  /data/
    sodrepoData.js   ← All portals with metadata
    hierachyAdm.js   ← Hierarchical parent-child structure
/src/
  App.jsx         ← All frontend and map logic in one file

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🤝 Contributing

We welcome contributions for improving data coverage, spatial refinement, UI polishing, or exporting functions. Open Data portals owners are invited to update/correct their portal information! Open an issue in GitHub or write the Maintainer an E-Mail.

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📖 Citation

If you use SODREPO in your research, please cite:

@misc{SODREPO2025,
  title        = {SODREPO: Spatial Open Data Regions & Portals},
  author       = {Florian Hahn in the SODIC Research Group},
  year         = {2025},
  howpublished = {\url{https://github.com/SODIC-research/SODREPO}},
  note         = {Accessed: August 22, 2025}
}

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⚖️ License

Released under the MIT License. See LICENSE for details. MIT License. External sources retain their own licensing:

• GeoBoundaries — CC BY 4.0
• OpenStreetMap — ODbL 1.0
• CARTO Tiles — CC BY 4.0

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👩‍🔬 Maintainer

Florian Hahn
SODIC Research Group, TU Chemnitz
Website — Contact: florian.hahn@informatik.tu-chemnitz.de