Cheap Tricks for Interaction 20200325
A world map rendered with SVG countries uses a natural Earth projection and hover highlighting to reveal country names via tooltips. The visualization supports zooming and panning through d3.zoom, which applies transform events to the map group. Geographic data comes from TopoJSON world-atlas files, with country names matched from a TSV file. D3's geoPath and geoNaturalEarth1 handle the projection and path generation.