Mapping D.C. Building Heights

By Matt Stiles | | Topics: DC

I posted yesterday about residential buildings in Seoul and South Korea. Here’s a quick look at the buildings in my previous city, Washington, D.C. Darker shades represent taller buildings:

Mapping Clinton, Trump Support

By Matt Stiles | | Topics: Policy & Politics

I’ve been collecting county-level data on the presidential primary race since the contests began earlier this year. With Donald Trump now the Republicans’ presumptive nominee — and Hillary Clinton rapidly heading there — here are two maps showing their support so far nationwide (inspired by The New York Timeslovely maps):

primary_results_dems_clintonSM

primary_results_dems_trumpSM

Mapping 2011 Earthquakes

By Matt Stiles | | Topics: Uncategorized

This 2011 earthquakes map, rendered in Google Earth, shows just how rare seismic events are on the East Coast: 

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UPDATE: Adding historical data I discover…

This map shows earthquake hazards in various parts of the country: 

The resulting maps are derived from seismic hazard curves calculated on a grid of sites across the United States that describe the frequency of exceeding a set of ground motions.

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This map uses symbols and colors to visualize the “seismicity” of the lower 48 states:  

Source: USGS