{"version":"1.0","type":"rich","title":"hw5","description":"This example visualizes a stacked bar chart comparing nitrogen levels across four plant groups under normal and stress conditions. Using D3 v6, it loads CSV data with `d3.csv`, sorts groups by descending nitrogen values, and applies a stacked layout via the `d3.stack` API. Bars are rendered as SVG rectangles with ordinal color scaling, while axes use `scaleBand` and `scaleLinear` with bottom and left axis generators. Data is parsed to numeric values before rendering.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cebff4c148164b8d811ee977ebb25c8d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}