Term
cartographic abstraction: transformation process in witch map author or cartograhper selects and organizes material to be mapped; identification of relevant elements
|
|
Definition
|
|
Term
| map design: aggregate of all thought procdsses that the map author or cartographer goes though during the abstraction phase of the cartographic process; activity seeking graphic solutions |
|
Definition
|
|
Term
| geodesy: the science that measures the size and shape of the Earth; often involves the measurement of the external gravitational field of the Earth |
|
Definition
|
|
Term
| map projection: the systematic arrangement of the Earth's spherical or geographic coordinate system onto a plane; a transfomation process that projects the geographic grid, along with land mass, bodies of water, and others features into a flat surface |
|
Definition
|
|
Term
| Eratosthenes: (276-194 B.C.) Greek scholar living in Alaxandria who first accurately measured the size of the Earth |
|
Definition
|
|
Term
| goeid: term used to describe the shape of th Earth; means "Earth-shape" and does not refer to a mathematical model |
|
Definition
|
|
Term
| reference ellipsoid: is a mathematically-defined surface that approximates the geoid, the truer figure of the Earth, or other planetary body |
|
Definition
|
|
Term
| datum: a starting of reference that gives a context of things such as the size and shape of the Earth, and for any coordinate system that can be used for positioning (including elevation) |
|
Definition
|
|
Term
Global Positioning System (GPS) is a U.S. space-based global navigation satellite system. It provides reliable positioning, navigation, and timing services to worldwide users on a continuous basis in all weather, day and night, anywhere on or near the Earth which has an unobstructed view of four or more GPS satellites
|
|
Definition
|
|
Term
| great circle: circle that results when a plane bisects the Earth into two equal halfs |
|
Definition
|
|
Term
| graticule: meridians of longitude and parallels of latitude on a map |
|
Definition
|
|
Term
| DMS format: the format for reporting sexagesimal latitude ans longitude in degrees, minutes, and seconds |
|
Definition
|
|
Term
| latitude: position north or south of the Earth's equator |
|
Definition
|
|
Term
| longitude: position east or west of the prime meridian |
|
Definition
|
|
