Airlines Bubble Chart Visualization

This interactive data visualization shows the relationship between departure delays and late aircraft delays across different airports and months. The bubble chart provides a multi-dimensional view of airline delay data with:

• X-axis: Number of Late Aircraft Delays
• Y-axis: Number of Departure Delays
• Bubble size: Number of Carrier Delays
• Bubble color: Month of the year

Features

• Interactive tooltips that show detailed information when hovering over bubbles
• Filtering capabilities by month and airport
• Dynamic annotations highlighting significant data points
• Color-coded bubbles by month for easy comparison across time periods
• Size representation showing the magnitude of carrier delays
• Correlation analysis and trend line (when significant correlation exists)
• Responsive design with clear axis labels and legends
• Animated transitions when changing filters

Data Source

The visualization uses airline delay data from filtered_airlines.csv which contains information about:

• Airport codes and names
• Time periods (month and year)
• Different types of delays (carrier, late aircraft, national aviation system)
• Flight statistics (total flights, delayed flights, on-time flights)

Technologies Used

• D3.js v7 for data visualization
• d3-legend for creating consistent legends
• d3-annotation for adding contextual annotations

How to Use

1. View the entire dataset initially to see overall patterns
2. Use the month filter to focus on specific times of year
3. Use the airport filter to examine delays at particular airports
4. Hover over any bubble to see detailed statistics including:
   • Airport name and code
   • Month
   • Various delay metrics (departure, late aircraft, carrier)
   • Total flight counts and delay percentages
5. Look for annotated data points that highlight important insights
6. Observe patterns between departure delays and late aircraft delays
7. Reset filters at any time to return to the full dataset view

Insights

The visualization reveals several patterns:

• A strong correlation between late aircraft delays and total departure delays
• Seasonal variations in delay patterns
• Airports with consistently high or low delay rates
• The relationship between carrier delays and overall delays

Full Course Information

Full course playlist: YouTube: Constructing Visualization 2024