{"version":"1.0","type":"rich","title":"Activity7_Question2","description":"This chart visualizes GDP growth rates over time as a stacked area chart, with each country represented by a distinct colored layer. The data is loaded from a CSV file using `d3.csv` and processed with `d3.groups` to organize values by year, then stacked using `d3.stack()`. The visualization uses D3 v7’s scale functions (`scaleLinear`, `scaleOrdinal`) and the `d3.area` generator to render smooth SVG paths, with axes drawn via `d3.axisLeft` and `d3.axisBottom`. A legend manually constructed with SVG rectangles and text identifies each country.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5105322d1adb4145ba68eb298c9e03cf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}