{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map colors countries by income group using a diverging red-blue ordinal scale, with a zoomable Natural Earth projection and a color legend built from custom SVG circles. The visualization loads world country boundaries from TopoJSON and joins them to TSV metadata, then renders each nation as a styled SVG path with hover highlighting. It uses d3.geoPath, d3.geoNaturalEarth1, d3.zoom, and d3.scaleOrdinal with the schemeRdBu palette, while the legend is implemented as a reusable module.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4598b4a43f4944c5be212ae1e4047973?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}