{"version":"1.0","type":"rich","title":"Line Chart with Multiple Lines","description":"This line chart displays the number of earthquakes recorded in four U.S. regions—West, South, Midwest, and Northeast—from 2011 to 2015. Each line represents a region, with points plotted per year using `d3.scaleTime` and `d3.scaleLinear` for axes. Hovering over a point triggers a second SVG bar chart showing earthquake counts by state for that region and year. The visualization uses D3 v5, SVG rendering, and data from the state-year-earthquakes.csv file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/17d3da29e782421c8cd681b91501c12c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}