{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map colors countries by income group, with a legend showing the categorical color scale. The visualization uses D3 v5’s `geoNaturalEarth1` projection and `geoPath` to draw world boundaries from TopoJSON data loaded via `topojson.feature`. Country polygons are filled based on economy data from a TSV file, and hover effects highlight regions. Users can zoom and pan using D3’s `zoom` behavior, while the custom color legend is built with reusable D3 selection methods.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f5ada4af10374fcd807fe5482b382554?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}