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Understanding Geographic Information Systems (GIS)

Learn about Geographic Information Systems (GIS) and maps. GIS is dynamic and infinitely scalable, showing both spatial relationships and tabular data while maps are static and show only spatial relationships. Explore how GIS has evolved from traditional maps to Web GIS.

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Understanding Geographic Information Systems (GIS)

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Presentation Transcript

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 “A graphic depiction of all or part of a geographic realm in which the real-world features have been replaced by symbols in their correct spatial location at a reduced scale.”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