Geographical Information System - ορισμός. Τι είναι το Geographical Information System
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Τι (ποιος) είναι Geographical Information System - ορισμός

SPATIAL DATA INFORMATION SYSTEMS
GIS; Geographic information systems; Geographical information system; Geographic Information Systems; Mobile GIS; Gis software; Geographical information systems; Geographical Information Systems; Geographical Information Service; Geographic Information System; Geographical Information System; Graphical information system; Graphical Information System; Geospatial Information System; GIS applications; Geoprocessing; Geospatial Information Systems; Geographic information system (GIS); Geo-Information Technology; Geo-Information Science; Geo-information science; Geoinformationssystem; Applications of geographic information systems; History of geographic information systems; Geographic Information Systems (GIS)
  • Hillshade model derived from a [[digital elevation model]] of the Valestra area in the northern Apennines (Italy)
  • forest inventories]], monitoring and mapping.
  • Basic GIS concept
  • OGC standards help GIS tools communicate.
  • John Snow]]'s 1855 map of the [[Soho]] [[cholera]] outbreak showing the clusters of cholera cases in the [[London]] epidemic of 1854
  • A traditional topographic map rendered in 3D

Geographic Information System         
<application> (GIS) A computer system for capturing, storing, checking, integrating, manipulating, analysing and displaying data related to positions on the Earth's surface. Typically, a GIS is used for handling maps of one kind or another. These might be represented as several different layers where each layer holds data about a particular kind of feature (e.g. roads). Each feature is linked to a position on the graphical image of a map. Layers of data are organised to be studied and to perform statistical analysis (i.e. a layer of customer locations could include fields for Name, Address, Contact, Number, Area). Uses are primarily government related, town planning, local authority and public utility management, environmental, resource management, engineering, business, marketing, and distribution. {GIS dictionary (http://geo.ed.ac.uk/root/agidict/html/welcome.html)}. Information Systemngraphic/wotzagis.html">http://ncl.ac.uk/Geographic Information Systemngraphic/wotzagis.html. (1995-12-21)
Geographical Information System         
Geographic Information System [Which is more common?] (1995-12-21)
Geographic information system         
A geographic information system (GIS) is a type of database containing geographic data (that is, descriptions of phenomena for which location is relevant), combined with software tools for managing, analyzing, and visualizing those data. In a broader sense, one may consider such a system to also include human users and support staff, procedures and workflows, body of knowledge of relevant concepts and methods, and institutional organizations.

Βικιπαίδεια

Geographic information system

A geographic information system (GIS) consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic data. Much of this often happens within a spatial database, however, this is not essential to meet the definition of a GIS. In a broader sense, one may consider such a system also to include human users and support staff, procedures and workflows, the body of knowledge of relevant concepts and methods, and institutional organizations.

The uncounted plural, geographic information systems, also abbreviated GIS, is the most common term for the industry and profession concerned with these systems. It is roughly synonymous with geoinformatics and part of the broader geospatial field, which also includes GPS, remote sensing, etc. Geographic information science, the academic discipline that studies these systems and their underlying geographic principles, may also be abbreviated as GIS, but the unambiguous GIScience is more common. GIScience is often considered a subdiscipline of geography within the branch of technical geography.

Geographic information systems are utilized in multiple technologies, processes, techniques and methods. They are attached to various operations and numerous applications, that relate to: engineering, planning, management, transport/logistics, insurance, telecommunications, and business. For this reason, GIS and location intelligence applications are at the foundation of location-enabled services, which rely on geographic analysis and visualization.

GIS provides the capability to relate previously unrelated information, through the use of location as the "key index variable". Locations and extents that are found in the Earth's spacetime are able to be recorded through the date and time of occurrence, along with x, y, and z coordinates; representing, longitude (x), latitude (y), and elevation (z). All Earth-based, spatial–temporal, location and extent references should be relatable to one another, and ultimately, to a "real" physical location or extent. This key characteristic of GIS has begun to open new avenues of scientific inquiry and studies.

Παραδείγματα από το σώμα κειμένου για Geographical Information System
1. Rescuers use a geographical information system that guides them to the caller, often with great accuracy.
2. The Geographical Positioning System, the Geographical Information System and the routing system guide the driver to the right destination, thereby preventing any misdirection.
3. The main mission of Arirang 2 is to provide geographical information system–based data of the Korean Peninsula during its three–year life span, covering information such as hydrology, road networks, urban mapping and demographic data.
4. The application of remote sensing and an Internet–based Geographical Information System (WebGIS) combined with cell phone technology for alert messaging or short message service (SMS) is the first of its kind.
5. An exhibition on latest technology, services and products on sensing, space, geographical information system and global positioning system and other related fields is also held on this occasion. (VNA)