{"version":"1.0","type":"rich","title":"happiness report pie chart","description":"This pie chart visualizes the aggregated Happiness Scores from the 2015 World Happiness Report, grouped by world region. It uses D3.js v6 to load CSV data, aggregate scores with `d3.rollup`, and render SVG arcs via `d3.pie` and `d3.arc`. A categorical color scale and legend distinguish regions, with labels positioned using arc centroids.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b894f6602c1b4ca4a6036431cf94f4b5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}