{"version":"1.0","type":"rich","title":"Earthquakes","description":"This heatmap visualizes earthquake counts (M3+) across U.S. states from 2010 to 2015, with each cell’s color encoding the annual total via a `d3.scaleQuantize` over nine discrete bins. A dropdown menu lets users filter the display by magnitude category (e.g., “10 to 99”), updating the visible rectangles. Built with D3 v5, the SVG renders axes using `d3.axisBottom` and `d3.axisLeft`, while a tooltip appears on hover to show the exact count. Data is loaded from a CSV with `d3.csv` and processed using `d3.nest` for grouping.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/89b1d9dffddc4b9f8b8a9a8ae4bd0669?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}