{"version":"1.0","type":"rich","title":"acitivity7","description":"This example displays the distribution of iris species as a pie chart, with each slice labeled and accompanied by a color-coded legend. It loads CSV data from a GitHub gist, parses numeric fields, and groups records by species using `d3.nest()` and `d3.rollup()`. The chart is rendered with SVG using `d3.pie()` and `d3.arc()`, while `d3.scaleOrdinal` with `schemeCategory10` assigns slice colors and legend swatches.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7eebf79fa16f409285d4d50853c289c3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}