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exploring Geographic Information Systems
Geographic Information Systems (GIS) is the organized activity by which people :
• Measure aspects of geographic phenomena and processes;
• Represent these measurements, usually in the form of a computer database, to emphasize spatial themes, entities and relationships;
• Operate upon these representation to produce more measurements, and to discover new relationship by integrating disparate source; and
• Transform these representations to conform to other frameworks of entities and relationship.
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