Definition of GIS

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What Is GIS
  • Geographical Information System (GIS) is a computer based information system used to digitally represent and analyze the geographic features present on the Earth’s surface and the events that taking place on it.
  • Geographic Information Systems provide a method for integrating and analyzing spatial (digital map based) information such as "where is the nearest Hospital?" 
  • Alongside related non-spatial information (what services are given there?). 
  • Many people are becoming far more familiar with seeing the results both textually - for example when their phone shows them the nearest Hotel - and on open map systems such as Google Maps. 
GIS Capabilities/ Analysis with GIS
  • Location: What is at a particular location...? Where is it….?
  • Condition: identify a location where certain conditions exist..? 
  • Trends: What has changed since...? 
  • Patterns: What things are related..? 
  • Modeling: What if…? 
The Need for GIS:

The real world has a lot of spatial data
  •   Manipulation, analysis and modeling can be effective and efficiently carried out with a GIS.      the neighborhood of the intended purchase of house location of historical sites to visit 
The earth surface is a limited resource
  • rational decisions on space utilization
  • fast and quality information in decision making
Click the following link to avail PDF file Definition of GIS

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