{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"This choropleth map visualizes countries colored by economic classification, with interactive filtering through a clickable legend that dims unselected regions. The map uses an equal-Earth projection via d3.geoPath and supports zooming through d3.zoom. World country boundaries come from TopoJSON, enriched with ISO codes from a TSV lookup. Selection updates path opacity and stroke-width, while the legend animates circle radii using transition().duration().","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/157b7264849e4dc19365b445d949b775?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}