AMS 103 Lecture Notes - Lecture 20: Packet Switching, Differential Calculus, Discrete Optimization
3 Oct 2017
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We can also nd boundaries for various regions with overlays . Thinking about gm as a search engine, we now need to: index, catalog, search geographic date. The study and practice of making maps . It is not possible to faithfully put the surface of a sphere on a at sheet of paper. That is, either distances or angles (or both) get distorted by the process. A 2d map you see is a projection of the earth"s surface onto a plane. There is no unique way to accomplish this. Transverse mercator: there no reason the equator has to be glued to the paper. Robinson: less distortion than the mercator projections, but angles are now distorted too, (normal map we are used to) Gm uses its own projection to describe the earth"s surface: at least locally, it faithfully represents angles and distances. How does google build the maps: satellites, google maps cars, user input.
