{"version":"1.0","type":"rich","title":"A9 World Choropleth","description":"This choropleth displays world happiness scores for 2022, coloring each country on a blue sequential scale and revealing its name and score on hover via SVG `<title>` tooltips. It loads CSV data and TopoJSON world geometry, then renders paths with `d3.geoPath()` and a Mercator projection. The implementation uses D3 v7, TopoJSON, and d3-legend, with color mapping from `d3.scaleSequential` and `d3.interpolateBlues`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0decaf6882ce48f499883fa9bca06991?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}