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Geographic Information System: Principles and Applications

  • G. P. Obi Reddy
Chapter
Part of the Geotechnologies and the Environment book series (GEOTECH, volume 21)

Abstract

Geographic information system (GIS) is a computer-assisted system for capture, storage, retrieval, analysis, and display of spatial data and nonspatial attribute data. The data can be derived from different sources such as survey data, geographical/topographical/aerial maps, satellite data, or archived data. Data can be in the form of locational data (such as latitudes/longitudes) or tabular (attribute) data. The introduction of modern technologies has led to an increased use of computers and information technology in all aspects of spatial data handling. The handling of spatial data involves data acquisition, storage and maintenance, processing, analysis, and output. GIS is a computerized database management system for capturing, storing, validating, maintaining, analyzing, displaying, and managing spatially referenced data with a primary function to integrate data from a variety of sources. GIS constitutes hardware, software, data, people, and methods. Advanced GIS can address questions related to location, condition, trends, patterns, and modeling. Manual digitization of existing paper maps, existing digital data, aerial photographs, remote-sensing satellite imagery, and global positioning system (GPS) are promising sources for data input in GIS. Before generation of any spatial data, one has to understand the available data types, data analysis procedures, and their capabilities in GIS to get realistic outputs. GIS is being widely used as spatial analysis tool for effective and efficient means of data generation, management, analysis, and display. Recent advances in computer technology, remote sensing, GPS, and communication technology augmented the development of enhanced functions of GIS in the field of data generation, management, analysis, and display. Data derived from remote sensing, GPS, and field surveys could be effectively used in GIS in mapping, monitoring, and management of land resources and dissemination of information at appropriate destinations in various location-based applications.

Keywords

Geographic information system Nonspatial data Raster Spatial data Vector 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • G. P. Obi Reddy
    • 1
  1. 1.ICAR-National Bureau of Soil Survey & Land Use PlanningNagpurIndia

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