{"version":"1.0","type":"rich","title":"Scatter 2","description":"This chart combines three encodings to show automotive trends across model years. It plots average MPG and horsepower as colored lines on a shared left axis, while average weight appears as bars using a separate right axis. The visualization aggregates individual vehicle records from the seaborn MPG dataset using `d3.rollups` and `d3.mean`, then renders an SVG with `d3.line`, `d3.scaleBand`, and multiple `d3.axis` components. A text annotation highlights the observed rise in fuel efficiency.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1e4f2323ce8f42389a5e252dfcab9608?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}