Symbol map

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Last edited Aug 6, 2018

Created on Aug 6, 2018

This symbol map shows the population of each U.S. state and the District of Columbia using circles sized proportionally to population, overlaid on a geographic outline of the country. The visualization sorts the states by population and uses a square-root scale to determine circle radius, ensuring areas are proportional to population values. It is built with D3 v3, TopoJSON for the state boundaries, and a queue to load the GeoJSON centroid data. Rendering uses SVG with a `d3.geo.path` projection and `pointRadius` to size each symbol.

AI-generated description

The area of each circle in this symbol map is proportional to the population of the associated state.

forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/4342045'>Symbol Map</a>

gpl-3.0 Licensed

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