{"version":"1.0","type":"rich","title":"Choropleth Map with Interactive Filtering","description":"A choropleth map colors countries by economic classification using a D3 ordinal color scale, then allows interactive filtering through hover-adjacent clicks on the legend. The map renders with SVG and a natural Earth projection via `d3.geoPath`, while the legend items toggle opacity and highlight matching countries. Users can zoom and pan using `d3.zoom`, and the map loads world geometry from TopoJSON with economy data from a TSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2336fc5130784ab48a5cdf14433a3cd6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}