Sanjay
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Sanjay Sanjay Presentation Transcript

  • ADVANTAGES OF GIS OVER MAPS AND CAD• SANJAY JADEJA• MECHANICAL 5th• 110863119003• D.A.U.G.T
  • GEOGRAPHICAL INFORMATION SYSTEMS1. GIS: A type of software A computer system that allows us to handle information about the location of features or phenomena on the Earth’s surface Has all the functionality of a conventional DBMS plus much of the functionality of a computer mapping system GIS as a DBMS that allows us to explicitly handle the spatial Common examples: ArcView ArcGIS MapInfo
  • GIS – SOME DEFINITIONSGIS may include manual systems, however, it usually refersto a computerised database system forcapture, storage, retrieval, analysis and display of spatialdata (Huxhold, 1991).GIS is capable of assisting the storage, retrieval andmanipulation of spatially referenced data such as streetaddress or a census tract (Nedovic-Budic, 1999).GIS is most useful when used to perform data analysis (Leeand Wong, 2001, viii)
  • GIS USES VARIOUS DATA AND VARIOUS DATA1 SOURCES FORMATS2 DIGITAL TEXT TABULAR MAPS IMAGE GPS PRODUCTS DATA DATA DATABASE MAPS REPORTS 4 3 4
  • Advantages GISCan cope with larger amounts of dataCan cover large study areas (the whole world if necessary)Can cope with unlimited and frequent edits and changesMore robust and resistant to damageFaster and more efficientRequires less person time and money
  • Limitations of GISData are expensiveLearning curve on GIS software can be longShows spatial relationships but does not provideabsolute solutionsOrigins in the Earth sciences and computer science.Solutions may not be appropriate for humanitiesresearch