GEO 481 Lecture Notes - Lecture 2: State Plane Coordinate System, Spheroid, Geographic Coordinate System
4 Mar 2019
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Document Summary
Computer based system to aid in the collection, maintenance, storage, analysis, output, and distribution of spatial data and information. Semantically similar in geographic but sounds modern and edgy emphasizes technology side. The space on or near the surface of the earth. Although gis can be applied to other planets as well. Relating to space, positions of objects in space. Science and technology related to geographic information, computer systems, softwareetc, more focused on information technology, similar to giscience. Links thematic information to locations on the surface of the earth. We need to understand the shape of the earth. Geodesy: the science of measuring the shape of the earth. Can be thought as an ellipse rotated around its shorter axis. Many (not just one) ellipsoids have been measured. In both sphere and ellipsoid, we assume that the surface of the earth is perfectly smooth. That"s not the true shape of the earth. Models the local undulations of the earth.
