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Last edited Mar 31, 2017

Created on Mar 31, 2017

This example presents a map of Oklahoma with earthquake data from the USGS all-week feed overlaid as crimson points. The view uses a Mercator projection fitted to the state boundary and a base layer of OpenStreetMap tiles rendered through d3-tile. It draws state outlines with topojson.mesh and d3.geoPath, then filters the earthquake GeoJSON to show only events within Oklahoma using d3.geoContains. The map emphasizes spatial clustering of seismic activity within the state.

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