MD Counties 4

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Last edited May 23, 2017

Created on May 21, 2017

An interactive choropleth map of Maryland counties displays population density using a sequential color scale, with hover effects revealing county details. A donut chart in the corner dynamically updates to show population, land area, and density proportions for the selected county. Built with D3 v4, the visualization uses `d3.geoConicConformal` for projection, `d3.geoPath` for rendering shapes, and `d3.pie`/`d3.arc` for the chart. Population data is sourced from JSON files, while county boundaries come from TopoJSON.

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