{"version":"1.0","type":"rich","title":"Task9_1.1","description":"This example shows the distribution of iris flower species as a pie chart, with each slice labeled by species name and count. The chart is rendered using D3 v7’s `d3.pie` and `d3.arc` to compute slice geometry, while `d3.rollup` aggregates the CSV data by species. A categorical color scale (`d3.scaleOrdinal` with `d3.schemeCategory10`) fills the slices, and annotations are positioned using the arc generator’s `centroid` method. The SVG output includes a legend built with appended rectangles and text.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7a0d1b4418dc4e9294881730740bd89c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}