A9-Proportional Symbols Map

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A9-Proportional Symbols Map

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Last edited Apr 14, 2025

Created on Apr 14, 2025

This proportional symbols map visualizes the relative cost of living across US states, using the area of each circle to represent its cost index. Hot pink circles mark the top ten most expensive states, while purple circles denote all others. Built with D3 v7 and TopoJSON, it projects state boundaries using an Albers projection via `d3.geoPath` and scales circle radii with `d3.scaleSqrt`. Interactive tooltips appear on hover, displaying each state's name, cost index, and rank. The map overlays state outlines with data from a CSV of state cost indices.

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MIT Licensed

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