Spatial data: spatial data including spatial information and systems are shown on the map, such as topographic maps; Map current use of land; zoning maps of land use planning; cadastral map ... Information on the spatial data are collected from different sources, such as paper maps are still valid; Measurements by the instrumentation ground; Aerial photographs, remote sensing images. The data model of spatial data for geographic information systems, as well as land information system objects are stored and exists two data models: vector model and the raster model.
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