Have you ever heard of the "L.U.S.A." ? :o)
Have a glance at this map :
it's a map of the Literary United States of America !
The map was created by Geoff SAWERS and Bridget Hannigan, and dealt with by Simon GARFIELD "Mapping America Writers", an article from The Economist 's Intelligent Life website (November 2012).
Nowadays word clouds allow us to create any kind of picture-shaped meaningful groups of words. Computers help us do them, but... literary maps aren't recent !
Geoff Sawers and Bridget Hannigan also created literary maps of....
the United Kingdom :
The literary map of Wales
was created by Geoff Sawers and Gwyn Tudur Davies
Mind that the authors' names are not randomly located on the map : as Simon GARFIELD explains in his article, as for the U.S.A., "The project exposed literary trends : a tight concentration of old-school stars in the east, and of younger, more experimental writers spreading, pioneer-style, westwards."