Question

Explain the Geographical Information System (GIS).

Answer 1

1. A geographic Information System is a computer-based tool for managing a large amount of data collected for a given geographic region through remote sensing, GPS, and other sources.
2. The Geographic Information’System is a combination of computer hardware, software, geographic data, and personnel.
3. G – Geographic – A particular area; I – Information – facts in order; S – System – arrangement
4. GIS was first recognized in the late 1950s by Waldo Tobler and Roger Tomlinson (Canada).
5. Prime examples of importing GIS for public welfare are Google Maps, Yahoo Maps, and Google Earth.
6. The key ingredient is the location. We must have a coordinate, an address, or a distance from a known point that helps us to link the information to a location on a map.
7. Each type of data of an area is stored as a separate ‘layer’ of the map.
8. In GIS, layers may be used sometimes and removed according to need.
9. Examples are hospitals, schools, water bodies, parks, and ATMs.
10. The computers can create maps showing any combination of data.