{"version":"1.0","type":"rich","title":"Choropleth map","description":"A choropleth map colors countries by their economy category, using an ordinal color scale with a spectral scheme and a custom legend that displays each category as a colored circle with a label. The map renders geographic shapes via `d3.geoPath` with a natural Earth projection, while `topojson.feature` converts TopoJSON world-atlas data into GeoJSON features. Users can pan and zoom the map through `d3.zoom`, and hovering over a country highlights it and reveals its name and economy type in a tooltip.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8b02c7fe20674576be1ecf3543bd08f5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}