What is GIS

GIS (Geographic Information System) is a system that is designed and used to manage, capture, store, manipulate and present spatial data. GIS applications can be used to create interactive queries analyse geographic data and present it. GIS is dynamic, it can refer to different technologies, processes and methods. GIS has been used in engineering fields, planning, management, transport/logistics, insurance telecommunications among others. Any location based services can be done using GIS. Programming languages are always talking about variables. The main variable in GIS is location. Locations are extents on the earth's surface can be represented through latitudes and longitudes or through x,y,z coordinates. This can be referred to as raster and vector respectively. Every earth based location should be relatable to each other either relative or absolute relationship. With GIS you are able to analyse different geographic info at different levels. Various audiences require different visualisations and GIS allows you to present your data in a way that fits everyone. Successful use of GIS doesn't solely depend on technical choices alone, it's prone to organisational and institutional barriers. One shouk take into consideration all aspects of GIS to successfully use it for decision making. These aspects include, administrative, technical, legal and organisational.


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