United States Road Map
As you think of United States Road Map, exactly what are you thinking of? In essence a map is a representation of a topology or function. Pertaining to example a formula such as X=2Y maps a worth of Y to each value of Times. Of course we all believe that mathematicians are weird and sometimes hard to understand but they have you ever seen a schematic map of a subway (underground railway) system? Perhaps you have ever seen the same network of rails descriptive on a more "normal" United States Road Map of the location in which it is located? Different United States Road Map of the extremely same thing can look quite different.
As you make a United States Road Map of the flat area - a "plan" or "elevation" - things are quite simple, but when you make an effort to map a larger area, like the surface of an whole planet, things can get quite complicated if you wish your map to be smooth. It truly is all very well to make a world, but try turning the top of that globe into a set United States Road Map! Yikes!
However you begin it, you finish program edge-effects. As I write this information I am actually included in programming map-generating programs designed to generate maps of fictional landscapes. I happen to be examining the map-generators that are included in the free, open-source (GNU GPL licensed) strategy game, FreeCiv. Edge results are extremely apparent in such maps. The United States Road Map are basically rectangular, but you can choose to obtain them act like cylinders by "wrapping" left to right or top to lower part, or you may also have "wrap" in both guidelines. Most often people make a decision on "wrap" only still left to right, and stop the most notable and bottom with "polar regions". Such simplified "wrapping" makes for quite extreme distortion though if you try it out with a real United States Road Map worldwide!