{"version":"1.0","type":"rich","title":"1 BMW volume of sales","description":"This stacked bar chart displays BMW sales volumes per year, segmented by region. The code loads a CSV file and uses `d3.rollups` to aggregate the data by year and region, then renders the result as SVG bars via `d3.stack`. A custom color scale classifies regions by their total sales, from highest to lowest, and bars can be clicked to highlight individual regions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6b50aa9a3e194e9080a0f1b1fe1d8e47?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}