{"version":"1.0","type":"rich","title":"Fork of D3 Course Code Along - Choropleth Map","description":"A choropleth map of world countries colored by income group, rendered with a Natural Earth projection. The visualization loads world-atlas TopoJSON data via `d3.json`, projects it with `d3.geoPath`, and colors each country using a sequential red scheme from `d3.schemeReds` based on a categorical `d3.scaleOrdinal` scale. An interactive legend built with custom SVG `circle` and `text` elements shows the color categories. The map supports zooming via `d3.zoom` and includes hover effects that highlight countries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ee985a105e5e4072824f5ef718d5f9f1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}