The Role of GIS in Modeling and Integration with Other Programs (Especially for GATE-Geospatial 2022)

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Role of GIS in Modeling

  • First, a GIS is a tool that can process, display, and integrate different data sources including maps, digital elevation models (DEMs) , GPS (Global Positioning System) , images and tables.
  • Second, models built with a GIS can be vector-based or raster-based.
  • Third, the distinction between raster-based and vector-based models does not preclude GIS users from integrating both types of data in the modeling process.
  • Fourth, the process of modeling may take place in a GIS or require the linking of a GIS to other computer programs.
GIS--The Geographic Approach

Different Ways of Integrating GIS and Other Systems

Diagram Shows Three Integrate Different Systems

There are various ways to integrate different systems:

  • Embedding versus linking
  • Loose coupling versus coupling
  • 1-way versus 2-way
  • Closed architecture versus open architecture.

They are all mutually exclusive – meaning a technique can be loosely coupled with 1-way, closed architecture; or it may be tightly coupled with 2-way, open architecture.

Diagram Shows IntegrationTechniques
  • Most GIS have out of the box features of linking. In embedding, we embed a map in a Non-GIS front end (i.e.. iframe) .
  • Loose coupling is where we keep the data in two different systems, but integrate only on the front end while in tight coupling we bring the data from one system to the other, and display through one of the systems.
  • 1-way and 2-way, indicate the data flow direction in an integration.
  • The main difference between a closed-architecture CAD/CAM system and an open-architecture CAD/CAM system is that a closed-architecture CAD/CAM system does not integrate with any components manufactured by another company.

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