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10. Geographic Coordinate System. Figure 2.11.1 The geographic coordinate system. Credit: David DiBiase. Longitude specifies positions east and west as the angle between the prime meridian and a second meridian that intersects the point of interest.
The geographic coordinate system is designed specifically to define positions on the Earth's roughly-spherical surface. Instead of the two linear measurement scales, x and y, the geographic coordinate systems juxtaposes two curved measurement scales.
Jan 21, 2023 · The objective of this section is to describe and discuss the concepts of map scale, coordinate systems, and map projections and explain why they are central to maps, mapping, and geographic information systems (GISs). All map users and map viewers have certain expectations about what is contained on a map.
