{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map colors countries by economic classification using an ordinal color scale derived from `d3.scaleOrdinal` and `schemeSpectral`. The map renders with `d3.geoNaturalEarth1` projection and `d3.geoPath`, while country geometries and names come from TopoJSON and TSV data loaded via `Promise.all`. A semi-transparent legend built from `d3.scaleOrdinal` domains shows color categories, and `d3.zoom` enables panning and zooming over the SVG. Hovering highlights individual countries in red.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/92aefa6f44e54ce192c1149251a943c9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}