{"version":"1.0","type":"rich","title":"Line Chart","description":"This line chart visualizes the relationship between engine size and average vehicle price using a sampled car dataset. The chart aggregates raw CSV data with `d3.rollup` to compute mean prices per engine size, then renders a monotone-smoothed path with `d3.line` and SVG circles for each data point. Axes use `d3.axisBottom` and `d3.axisLeft`, with price formatting as currency. Interactive hover tooltips display exact values via mouse events, all styled with a dark theme.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d56acddb9ecb47c9b99580e0a223e5dc?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}