{"version":"1.0","type":"rich","title":"Area chart ice 7","description":"This area chart displays the average MPG for vehicles by model year, spanning 1970 to 1982, based on the Auto MPG dataset loaded via `d3.csv`. The chart uses `d3.rollup` and `d3.mean` to aggregate the data, then renders a filled SVG path with `d3.area`, where the baseline sits at the bottom of the plot and the upper edge follows the calculated yearly averages. Axes are generated with `d3.axisBottom` and `d3.axisLeft`, while `d3.scaleLinear` maps the year and MPG values to the chart’s coordinates. A subtle blue fill with a matching stroke highlights the trend in fuel efficiency over time.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6c0a399742ca442f86c2e15e8986430d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}