{"version":"1.0","type":"rich","title":"Fork of Vega-Lite API Template","description":"This visualization presents a density plot of automobile horsepower over time, using a filled line mark with 10% opacity to reveal overlapping data patterns. The visualization is built with the Vega-Lite API, where the visualization specification is defined declaratively in `viz.js` using functions like `markLine` and `encode`, then rendered to SVG via the Vega view system. Data is loaded asynchronously from a CSV file containing auto-mpg records using d3.csv, with mouse interactions handled through Vega Tooltip. The chart dimensions dynamically adapt to the browser window, and the axis styling is customized through a shared configuration object.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/58eda899a40a4216bd9523c845f51ca0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}