Large Urban libraries take note:

There Are Really Just Four Kinds of Cities In the World

http://gizmodo.com/there-are-really-just-four-kinds-of-cities-in-the-world-1643813660

“Most of us want to believe that our cities are unique, special snowflakes, unlike anywhere else in the world. But a new study analyzing 131 different city grids has found that every city falls into one of four categories. Staten Island, for example, has a lot in common with the Syrian city of As-Suwayda.

The study is titled A typology of street patterns, and in it, authors Rémi Louf and Marc Barthelemy explain how a complex mathematical analysis of each city’s block shape, size, and layout was used to define four discrete city types.”

“Your city might be special to you—but nearly all of our cities share some basic attributes. Though the paper itself is behind the paywall of Journal of the Royal Society Interface, you can get a more information from Science Mag and Discovery. [ScienceMag; QuantUrb; Discovery;Journal of the Royal Society Interface]”

Stephen