{"version":"1.0","type":"rich","title":"Activity_7.1.1","description":"This example visualizes 2022 US auto sales by brand as a pie chart, with each slice colored and accompanied by a legend showing brand names, their percentage of total sales, and sales figures in thousands. The code loads CSV data via `d3.csv`, computes pie layout using `d3.pie`, and renders SVG paths with `d3.arc`. Legends are built manually with appended rectangles and text, using `d3.scaleOrdinal` for categorical colors and `d3.format` for tick labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/924e2bfd85954ffab487eb922d42a73b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}