{"version":"1.0","type":"rich","title":"Choropleth Map","description":"A choropleth map colors countries by income group using an ordinal color scale with a spectral scheme, drawing each nation with `d3.geoPath` and a Natural Earth projection. The visualization supports zooming via `d3.zoom` and includes a custom color legend rendered with SVG circles and text. Country names and income data come from TopoJSON and TSV files loaded from the world-atlas package. Hovering over a country reveals its name and income group in a tooltip.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e8306b991ff44060b451adcc18d6e278?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}