Gist ee039347749f9d1984f2a1447ac322fd
A choropleth map of French regions colors each region by its total reported flu cases during 2014, using a quantized color scale from light to dark green. Hovering a region displays its name in a tooltip. The visualization merges weekly incidence data from a CSV file with regional boundaries from a GeoJSON file using D3.js v3, rendering the map with `d3.geo.conicConformal` and `d3.geo.path`.
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