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class 3

✓ Published0🌍 Public
AAnaMal08
Last edited Mar 10, 2017
Created on Mar 10, 2017

This example displays a map of the United States overlaid with earthquake locations from the USGS’s daily GeoJSON feed. The visualization shows each earthquake as a small path marker on top of the state boundaries. The map uses the `d3.geoAlbersUsa` projection and `d3.geoPath` to render the geographic shapes, with state outlines drawn from TopoJSON data. Earthquake points are appended as `path` elements with a crimson fill, while the states are styled in a light yellow, highlighting the spatial distribution of recent seismic activity.

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This example displays a map of the United States with earthquake locations overlaid as crimson points. The map is rendered using SVG paths created with `d3.geoPath` and a `d3.geoAlbersUsa` projection, while earthquake data is loaded from the USGS GeoJSON feed and plotted with the same path generator. The visualization also shows the latitude and longitude of the mouse cursor in a separate text element, using the projection’s `invert` method to translate screen coordinates to geographic coordinates.

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