{"version":"1.0","type":"rich","title":"Earthquakes","description":"This heatmap visualizes earthquake counts across U.S. states from 2010 to 2015, with each cell colored by magnitude category. The view initially filters to the \"10 to 99\" category, but a dropdown menu lets viewers switch between magnitude ranges. Built with D3 v5, the code uses `d3.scaleBand` for axes, `d3.scaleQuantize` for color mapping, and `d3.nest` for category grouping. SVG rectangles render the data, with tooltips showing exact counts via mouseover and mouseleave events.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/730384978fc648aa9f949dd581b82b58?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}