In order to be unambiguous about the direction of vertical and the horizontal surface above which they are measuring, mapmakers choose a reference ellipsoid with a given origin and orientation that best fits their need for the area to be mapped. They then choose the most appropriate mapping of the spherical coordinate system onto that ellipsoid, called a terrestrial reference system or geodetic datum. Datums may be global, meaning that they represent the whole Earth, or they may be local, meaning that they represent an ellipsoid bestfit to only a portion of the Earth. Points on the Earths surface …
You can search for a place using its latitude and longitude GPS coordinates. You can also find the coordinates of a place youve already found on Google Maps. Besides longitude and latitude, you can use plus codes to share a place without an address. Enter coordinates to find a place. On your computer, open Google Maps. In the search box at the ...
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