{"version":"1.0","type":"rich","title":"Question 1 pie chart","description":"This example shows a pie chart of total sales aggregated by item category, with a legend and annotations for each slice. A title and subtitle introduce the visualization at the top of the SVG canvas. The code uses D3 v6 to load a CSV from a GitHub Gist, aggregates records with `d3.rollups` and `d3.sum`, and renders the chart with `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` with `d3.schemeCategory10`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0584f920eb2a4eb49833c2784553ec71?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}