World Population Tree

An interactive hierarchical visualization of world population data organized by Continent → Country → City.

Features

• Hierarchical Tree Visualization: Display data in a three-level tree structure
• Color-Coded Levels: Different colors for each hierarchy level
• Interactive Tooltips: Hover over cities to see detailed population information
• Responsive Design: Clean, modern UI with smooth interactions
• Error Handling: Graceful fallback to sample data if CSV fails to load

Project Structure

• index.html - Main HTML file with styling and layout
• tree.js - D3.js visualization logic and data processing
• data.js - Data source configuration
• README.md - Documentation (this file)

Data Format

The visualization expects data in CSV format with the following columns:

Example CSV