Geographical Information System(GI)

1. GIS: A type of software

  • A computer systems that allows us to handle information about the location of features or phenomena on the Earth's surface
  • Has all the functionality of a conventional DBMS plus much of the functionality of a computer mapping system
  • GIS as a DBMS that allows us to explicitly handle the spatial
  • Common examples:
                ArcGIS
                MapInfo

2. GIS: A tool - kit
         Manipulate spatially:
                 Calculate distances and adjacencies
                 Change projections and scales
                  Integrate disparate sources
         Analyse spatially:
                  Quantitative analysis
                   Exploratory spatial data analysis
                   Qualitative analysis
         Visualize data:
                    Maps!
                    Tables, graphs, etc.
                    Animations
                    Virtual landscapes

3. Approach:
    Explore the database:
          In conventional ways
          AND geographically
  • Allows us to think about the implications of location
  • Allows us to think holistically
  • Should not be restricted by vendor - provided functionality
  • Should be used imaginatively taking into account
              - the advantages and limitations of geographical information
              - the traditions of humanities scholarship