{"version":"1.0","type":"rich","title":"Task8_PieChart","description":"This pie chart visualizes global emissions by gas type using data from the OWID CO2 dataset. The visualization displays proportional slices for each gas category, with a legend mapping color-coded segments to their respective labels. The chart uses D3 v7's `d3.pie`, `d3.rollup`, and `d3.arc` APIs to compute and render the arcs, while `d3.scaleOrdinal` with `d3.schemeSet3` provides the categorical color palette. The SVG output includes interactive-free path elements with white stroke separators and centroid-positioned text labels for each gas type.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8aa873323c4948f8a7e8c57479a3a007?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}