amirthaganeshp

@amirthaganeshp·3 public vizzes

Earthquake Choropleth Map

This choropleth map visualizes earthquake counts across U.S. states using a logarithmic color scale from the OrRd scheme. It shows total earthquakes per state, with darker shades representing higher counts and hover effects highlighting individual states. The visualization uses D3 v5 with d3.geoAlbersUsa projection and d3.geoPath to render TopoJSON state boundaries from the states-10m dataset. State earthquake data comes from a CSV file, and a custom tooltip displays state name, region, and earthquake count on hover.

Feb 21, 2020

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Earthquake Choropleth Map

The Earthquake Choropleth Map visualizes the total number of earthquakes per U.S. state from 2010 to 2015, using a logarithmic color scale applied via `d3.scaleThreshold` and `d3.schemeOrRd`. The map renders U.S. states as SVG paths with `d3.geoPath` and an AlbersUSA projection, built from TopoJSON data. Hovering triggers a custom tooltip that displays state, region, and earthquake count, styled through CSS. The visualization uses D3 v5 to load CSV data and TopoJSON geometry.

Feb 21, 2020

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Earthquake Choropleth Map

This choropleth map visualizes earthquake totals across U.S. states, using color intensity to show logarithmic counts in a sequential red scheme. The map renders geographic boundaries with `d3.geoPath` and the Albers USA projection, while state colors are assigned via a `d3.scaleThreshold` using `d3.schemeOrRd`. Data comes from a CSV of earthquake records and TopoJSON state geometries, processed using the `topojson.feature` API. Hovering a state highlights its border through CSS, though tooltip code is incomplete in the source.

Feb 19, 2020