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What is a Geographic Information System?

What is a Geographic Information System?. G eographic I nformation S ystem = GIS. What is a GIS?. Maps. What is a map?.

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What is a Geographic Information System?

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  1. What is a Geographic Information System? Geographic Information System = GIS

  2. What is a GIS?

  3. Maps

  4. What is a map? “A graphic depiction of all or part of a geographic realm in which the real-world features have been replaced by symbols in their correct spatial location at a reduced scale.” power line

  5. From Map to GIS

  6. GIS (local software) Web maps/ Web GIS Progression Map

  7. Comparison

  8. Map  Web Map  GIS • A map is static, a GIS is dynamic • A map has a single scale, a GIS is infinately scaleable • A map shows spatial relationships, while a GIS shows both spatial relationships and tabular data

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