• BASIC CONCEPTS OF GEOGRAPHIC INFORMATION SYSTEMS (GIS)
    PRACTICAL GEOGRAPHY

    BASIC CONCEPTS OF GEOGRAPHIC INFORMATION SYSTEMS (GIS)

    A Geographic Information System (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographical data. In other words, GIS describes any information system that integrates stores, edits, analyses, shares and displays geographic information for informing decision making. A GIS can be described as a system that provides spatial data entry, management and retrieval, analysis and visualization functions. GIS applications are tools that allow users to create interactive queries (user-created searches), analyze spatial information, edit data in maps and present the results of all these operations. The acronym GIS is sometimes used for Geographical Information Science or Geospatial Information Studies to refer to the…

  • BASIC EXPLANATION OF LATITUDE AND LONGITUDE
    PHYSICAL GEOGRAPHY

    BASIC EXPLANATION OF LATITUDE AND LONGITUDE

    On earth’s surface, locations are determined by the two reference lines known as latitude and longitude. In fact, these are the ‘geographical coordinates’ which are used by a pilot and the ship captain, to indicate the position on the map. The surface of the earth is vast enough that it was difficult to locate any point, without the utilization of the mathematical method. For this purpose, fictional lines are drawn on the globe, known as latitude and longitude. Both the latitude and longitude are imaginary lines, which are used to locate points on the earth’s surface, measured in degrees.   Latitude Often called parallels or circles of latitude, latitudes are…

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