{"version":"1.0","type":"rich","title":"choropleth map","description":"A world map rendered as a choropleth uses color to encode each country’s economy classification. Built with D3 v5 and topojson, the visualization loads geographic data from a 50m world-atlas JSON and TSV files, then projects it using `geoNaturalEarth1`. The `scaleOrdinal` color scale applies the `schemeSpectral` palette, while a custom legend displays the categories. Hovering turns a country red, and zooming is supported via the `zoom` event handler.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0f9362c428524328be9fc02d14e0821d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}