{"version":"1.0","type":"rich","title":"Activity_Tutorial2_Q2","description":"This stacked bar chart visualizes mobile operating system market share (Android, iOS, and Other) across five global regions, with horizontal bars showing percentage values that sum to 100%. Interactive tooltips display exact numeric values on hover. The visualization uses D3 v7’s `d3.stack()` to compute layered data, `d3.scaleBand()` for categorical y-axis positioning, `d3.scaleLinear()` for percentage scaling, and `d3.scaleOrdinal()` with `d3.schemeSet2` for coloring. Bars render as SVG rectangles within a grouped `<g>` element, with data loaded from a CSV file specifying regional OS percentages.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5305faa990be4dcf9607102b57e297b4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}