# Interactive Line Chart with Brush - Iteration 3

# Global CO2 Emissions Timeline

Interactive timeline with brush selection for detailed exploration

Visualization inspired by: D3 Focus + Context via Brushing

Data from: Carbon Intensity API (simulated)

Created: 2025-10-10T23:52:30Z

{ "iteration": 3, "web_source": "https://observablehq.com/@d3/focus-context", "techniques_learned": [ "Brush selection for focus + context pattern", "Coordinated views with zoom synchronization", "Area charts with linear gradients" ], "data_source": "https://api.carbonintensity.org.uk", "created": "2025-10-10T23:52:30Z" }