{"version":"1.0","type":"rich","title":"sunburst chart CO2 emissions","description":"This sunburst chart visualizes global CO₂ emissions, grouped hierarchically by region and then by country. Each arc segment’s size and color (using a warm-to-cool gradient scale) represent the total emissions for that country. The chart is built with D3.js, using `d3.partition`, `d3.arc`, and `d3.hierarchy` to compute the layout from the grouped data. Hovering highlights a segment and temporarily displays its name and value in a text label.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fa02bf798cdf49a2a0b84f062a1c3812?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}