Monday, December 26, 2016

Mapping the Shadows of New York City

Midtown Manhattan in the winter.

From the winter shadows cast on the Hudson from One World Trade to the bright, sun-dappled street corners of Midtown Manhattan in spring ...  all of the shadows produced by thousands of buildings in New York City over the course of one day mapped.

A time-lapse view of Madison Square Park. Chang W. Lee/The New York Times
"Calculating the length and shape of a shadow cast from a simple object can be easily done with pen, paper and some basic math. But architects use a more sophisticated method known as ray tracing; it simulates the effects a ray of light can have on a building and its surroundings. Most analyses of shadows study just a few buildings at a time. What made it an interesting problem for the researchers at the Tandon School of Engineering at New York University was how to do it at a scale so you could quickly study whole neighborhoo
ds."
More: The New York Times

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