{"version":"1.0","type":"rich","title":"Fork of HTML Starter","description":"This visualization combines bar charts and a line chart to show average MPG and average horsepower by model year from the `mpg.csv` dataset. It uses D3 v7 APIs such as `d3.csv`, `d3.rollup`, `d3.scaleBand`, `d3.scaleLinear`, `d3.axisBottom`, and `d3.line`. The SVG rendering displays skyblue bars for mean MPG and an orange line for mean horsepower, with axes, labels, a title, and a legend.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7118da8269624d188a707483b93a9c3c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}