Geographical Information System (GIS) — Flashcards

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Spatial Information Technology comes from the idea of space and refers to the distribution of phenomena over geographical space. It uses technology for collecting, storing, retrieving, displaying, man…

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GIS has different definitions because scholars view it from different backgrounds and viewpoints, and the meaning also changes as technology advances. Maguire lists 11 different definitions of GIS. Pi…

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GIS is a system for capturing, storing, checking, integrating, manipulating, analysing, and displaying data that are spatially referenced to the Earth. It normally includes a spatially referenced comp…

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Rhind described GIS as a computer system that can hold and use data describing places on the Earth's surface. This definition highlights the role of computers in storing location-based information and…

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Geographical information is represented by two types of data: spatial data and non-spatial data. Spatial data show location and shape, while non-spatial data describe the features. Non-spatial data ar…

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Spatial data refer to geographical space and are characterised by positional, linear, and areal forms. They must have a definite geometrical shape so that they can be stored in the internal database s…

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Non-spatial data describe spatial data, so they are also called attribute data. They give descriptive information about a feature, such as quantity, type, or other details linked to a location. A stoc…

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Spatial data need a definite geometrical shape because GIS stores them in an internal database structure based on location and form. Without a clear shape such as point, line, or area, the data cannot…