{"version":"1.0","type":"rich","title":"Choropleth Map","description":"A choropleth map colors countries according to their economy type, with a custom ordinal color legend and hover interactions that highlight each nation. The visualization renders an SVG world map using a natural Earth projection via `d3.geoPath` and `d3.geoNaturalEarth1`, while supporting pan and zoom through `d3.zoom`. Data comes from the World Atlas TopoJSON and TSV datasets, processed with `topojson.feature` and loaded asynchronously. The color scale uses `d3.scaleOrdinal` with `d3.schemeSpectral`, and the legend is built with custom D3 enter/merge/exit selections.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/37befad7095740e7ba518db269560292?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}