{"version":"1.0","type":"rich","title":"Chorpleth Map","description":"This choropleth map colors countries by income group using an ordinal color scale with a spectral scheme. The visualization loads world geometry from TopoJSON and joins it with TSV metadata, then renders the map with a natural Earth projection via d3.geoPath. Users can pan and zoom through d3.zoom, while a custom color legend built with SVG circles and text shows the categorical mapping. Hovering over a country highlights it in red and reveals its name and income group in a tooltip.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f1bbf51ae42b404092fbc934cd34bbd1?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}