US FOREIGN TRADE
✓ Published0🌍 Public
GGerHobbelt
Last edited Sep 9, 2012
Created on Jul 18, 2012
A bubble chart visualizes US foreign trade figures by region and country, using bubble size to represent total trade volume and color to indicate trade magnitude (low, medium, or high). Users can filter the display by year (2006–2010) or by clicking a regional bubble to drill down into individual countries. The visualization is built with the D3.js library (v2), using `d3.nest()` to hierarchically group data from the U.S. Census Bureau’s Foreign Trade Division, and `d3.layout.force()` for animated bubble positioning in SVG.
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