{"version":"1.0","type":"rich","title":"Untitled","description":"This example displays a choropleth world map colored by the reported happiness score from a CSV dataset covering over 80 countries. The visualization loads world topography via TopoJSON, joins it with the tabular data, and maps each country’s score to a sequential blue color scale using `d3.scaleSequential` and `d3.interpolateBlues`. It renders the geographic boundaries as SVG paths through `d3.geoPath` with a Mercator projection. The underlying libraries are D3 v6 and the world-atlas TopoJSON collection.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6f4061c94b9b4cb2b76b94f77c469b50?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}