{"version":"1.0","type":"rich","title":"Pie Chart","description":"This pie chart visualizes the population distribution across 14 cities in Liaoning Province, China, using data from a CSV file. The chart renders as an SVG with donut-style arcs, where each slice’s arc length corresponds to a city’s population value, and city names are placed outside the ring using `d3.arc` and centroid positioning. The code uses `d3.pie()` to compute arc angles, `d3.scaleOrdinal` with `d3.schemeSet2` and `d3.schemeSet3` for colors, and `d3.arc().innerRadius(60).outerRadius(260)` to generate the paths, with labels positioned via an outer radius of 280.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/074c0fdc6cbc40fab38229c93a61fcf8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}