Earthquakes

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✓ Published1🌍 Public

Yyoyo2050

Last edited Sep 29, 2019

Created on Sep 21, 2019

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.

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MIT Licensed

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