Map Projection
Equal Earth, centered on the Prime Meridian
Dataset Source
Epilepsy attribute data supplied by the user; country polygons from Natural Earth via the geo-countries GeoJSON package.
Map APIs / Geometry Attributions
D3.js, TopoJSON client, and d3-scale-chromatic via jsDelivr; Natural Earth country boundaries accessed through the geo-countries package; all map code authored for this project.