GEOG372 Lecture Notes - Lecture 4: Public Land Survey System, Geographic Coordinate System, Universal Transverse Mercator Coordinate System
29 Sep 2016
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Document Summary
Geographic location is the element that distinguishes geographic info from all other types of info. Methods for specifying location on earth"s surface are essential to creation of useful geographic info. Principles of georeferencing, including requirements that any effective system must satisfy. Geographic information includes location, time, attribute (non-spatial and aspatial) Locations are the basis for many of the benefits of gis. Tie different kinds of information together for same area. Variability in time on the same location. Terms used to describe act is assigning locations. Unique systems of reference; only 1 location associated with a given reference. Meaning shared among all people who work with the information (with the same reference) Every georeference has an associated spatial resolution. Size of area that is assigned that georeference. Georeferencing systems vary in level of accuracy. Cadaaster and the us public land survey system. Gives names to places is the simplest form of georeferencing. Today, each country maintains a system of authorized naming.
