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-----Original Message----- From: Maps, Air Photo, GIS Forum - Map Librarianship [mailto:[log in to unmask]] On Behalf Of Angie Cope, American Geographical Society Library, UW Milwaukee Sent: 17 September 2012 17:37 To: [log in to unmask] Subject: Inside the Secret Program to Build the World's Best Maps -------- Original Message -------- Subject: Inside the Secret Program to Build the World's Best Maps Date: Mon, 17 Sep 2012 11:31:23 -0500 (CDT) From: Christopher M Baruth <[log in to unmask]> To: Angela R Cope <[log in to unmask]> http://www.theatlanticcities.com/design/2012/09/inside-secret-program-bu ild-worlds-best-maps/3193/ Behind every Google Map, there is a much more complex map that's the key to your queries but hidden from your view. The deep map contains the logic of places: their no-left-turns and freeway on-ramps, speed limits and traffic conditions. This is the data that you're drawing from when you ask Google to navigate you from point A to point B -- and last week, Google showed me the internal map and demonstrated how it was built. It's the first time the company has let anyone watch how the project it calls GT, or "Ground Truth," actually works. (click link above to read entire article) ----------------------------------------------------- Christopher Baruth, Ph.D. Curator Emeritus American Geographical Society Library University of Wisconsin-Milwaukee Libraries Office: 414.229.6282; Cell phone: 414.430.0793 ------------------------------------------------------