{"version":"1.0","type":"rich","title":"Choropleth Map","description":"This choropleth map colors world countries by their economic classification using a categorical color scale derived from d3.scaleOrdinal and d3.schemeSpectral. It draws geographic boundaries with d3.geoPath and a natural Earth projection, with hover highlighting and zooming via d3.zoom. Country metadata—including economy and income group—comes from a TSV file joined to TopoJSON geometry, and a custom legend component renders the color domain as circles with labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7eceeb352a7d40f6ab16558ec6dd073a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}