{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map visualizes the nominal GDP of countries using a color scale based on income group, with darker colors indicating higher values. The map uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath` to render country boundaries from TopoJSON data loaded from the World Atlas. A color legend, built with a custom `colorLegend` component, displays the ordinal scale domains using `d3.scaleOrdinal` and the `schemeSpectral` color range. The visualization also supports zooming through `d3.zoom`, and country tooltips appear on hover via SVG `<title>` elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4278bb125b2d4e64bf4bfab2141205b1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}