HerdLink Web is a browser-based tool for exploring livestock trade networks in the Netherlands. It combines regional graph views, map overlays, temporal metrics, partition summaries, and simulation panels so movement structure and disease spread scenarios can be inspected in one workspace.

Ledger mode, global view public/assets/screenshots/ledger-global.png	Ledger mode, focus view public/assets/screenshots/ledger-focus.png
Sim mode, global view public/assets/screenshots/sim-global.png	Sim mode, focus view public/assets/screenshots/sim-focus.png

• https://herdlink.nl

• Trade ledger mode for daily, weekly, monthly, and yearly livestock movement summaries.
• Graph and map views with regional links, map layers, risk scores, and network metrics.
• Focus mode for inspecting one region's incoming and outgoing trade structure.
• Simulation mode with SEIR controls, compartment trajectory panels, regional prevalence maps, and focus node simulation insights.
• Partition and community views that summarize trade clustering, partition exposure, and CR-region mappings.
• Intro overlay with quick start notes, keyboard shortcuts, and guided shortcut callouts.
• PNG export for the main network visualization.

.
├── index.html                    # Vite entry document
├── src/
│   ├── App.jsx                   # React shell and mount bridge
│   ├── components/               # Static layout components
│   └── styles/herdlink.css       # Application styles
├── public/
│   ├── assets/
│   │   ├── data/                 # Aggregated trade datasets
│   │   ├── files/herdlink/       # GeoJSON and SVG assets
│   │   ├── js/                   # D3 helpers and HerdLink runtime
│   │   └── screenshots/          # README images
│   ├── CNAME
│   └── favicon.ico
├── package.json
└── vite.config.js

Install dependencies:

npm install

Start the local dev server:

npm run dev

Create a production build:

npm run build

Preview the build locally:

npm run preview

This project is licensed under the MIT License. See LICENSE for details.