Proportional Symbol Maps

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Proportional Symbol Maps

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Last edited Apr 12, 2022

Created on Apr 12, 2022

This proportional symbol map displays transportation costs across U.S. states, with circles sized by cost and colored purple for the top 10 most expensive states or violet otherwise. Hovering reveals a tooltip with the state name and exact cost. Built with D3 v3, it uses d3.geo.path for map rendering, d3.scale.sqrt for circle radii, and topojson to draw state boundaries. The visualization includes a legend showing cost values and employs queue.js to load GeoJSON, centroid data, and a CSV of state costs.

AI-generated description

A bare minimum HTML page demonstrating use of CSS and JavaScript.

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