{"version":"1.0","type":"rich","title":"multiline chart with legend d3","description":"This example shows a multiline chart tracking average fuel economy (mpg) per year, with lines colored by engine displacement range. The chart uses d3.rollup to aggregate the CSV data, d3.scaleTime for the x-axis, d3.scaleLinear for the y-axis, and d3.scaleOrdinal with colorbrewer colors for the legend. SVG line elements are positioned using the scales, with axes rendered via d3.axisBottom and d3.axisLeft.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5cb9894f6b4e430381649ad7316e35a4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}