{"version":"1.0","type":"rich","title":"D3 Course Code Along - Choropleth Map","description":"This choropleth map visualizes global income groups using a natural Earth projection, with countries colored according to their income classification. The map is rendered as SVG paths generated by `d3.geoPath` from TopoJSON data loaded from World Atlas, combined with TSV metadata. A custom color legend displays the ordinal color scale using `d3.scaleOrdinal` with reds, and a zoom interaction allows viewers to pan and scale the map. Animated transitions with `transition.duration` update the legend circles when the data domain changes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fad47ba8a38e4d8f91b70c0bbdb11fcc?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}