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Data model (GIS) : ウィキペディア英語版 | Data model (GIS) A data model in geographic information systems is a mathematical construct for representing geographic objects or surfaces as data. For example, the vector data model represents geography as collections of points, lines, and polygons; the raster data model represent geography as cell matrices that store numeric values; and the TIN data model represents geography as sets of contiguous, nonoverlapping triangles.〔Wade, T. and Sommer, S. eds. ''(A to Z GIS )''〕 ==Representing three-dimensional map information== There are two approaches for representing three-dimensional map information, and for managing it in the data model.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Data model (GIS)」の詳細全文を読む
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