{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map visualizes countries’ income groups using an ordinal color scale, coloring each nation from a world-atlas dataset. The map renders geographic boundaries via `d3.geoPath` with a natural Earth projection, and supports panning and zooming through d3.zoom. A legend, built with the custom `colorLegend` function, displays income group categories as colored circles. Hovering highlights countries in red, while tooltips reveal each country’s name and income group, sourced from the accompanying TSV metadata.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/81c74d49be0547c7a50b847a9eed884d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}