{"version":"1.0","type":"rich","title":"Activity_Tutorial_3.1","description":"This stacked bar chart displays mobile operating system market share percentages across five global regions, with colored segments for Android, iOS, and Other. Each region’s horizontal bar spans from 0 to 100 percent, and hovering over a segment reveals its exact value via a tooltip. The visualization uses D3 v7’s `d3.stack()` to transform the CSV data, `d3.scaleBand` for region positioning, `d3.scaleLinear` for percentages, and `d3.schemeSet2` for categorical colors. SVG rendering handles the axes, while mouse events update tooltip opacity and content.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c8b1ff4f335b4b9fad9c7e9937715b42?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}