Synonyms
Data models; Data representations; Vector Models; Raster Models
Definition
Geographic data models are used to represent real world objects (e. g., buildings, roads, land parcels, rainfall, soil types, hills and valleys, etc.) within a geographic information system. These data models are used by the GIS to perform interactive queries, execute analyses, and produce cartographic maps. Many different data types may be used to model this data. Commercial GIS systems are intended to address diverse user requirements across a broad spectrum of application domains. Some users of these systems are focused on traditional two‐dimensional vector representations of spatial data (e. g., modeling topologically integrated cadastres, road networks, or hydrologic networks), while other users are concerned with raster data obtained from satellite imagery and other aerial image sources. In addition, the advent of Light Detection and Ranging has provided large sources of z-enabled data...
Recommended Reading
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© 2008 Springer-Verlag
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Hoel, E. (2008). Data Models in Commercial GIS Systems. In: Shekhar, S., Xiong, H. (eds) Encyclopedia of GIS. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35973-1_247
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DOI: https://doi.org/10.1007/978-0-387-35973-1_247
Publisher Name: Springer, Boston, MA
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Online ISBN: 978-0-387-35973-1
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