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Abstract£ºData is very important for Land Information System£¬A key to Land information the system's developments success is whether the data quantity is accuracy. This paper will Study the data quantity the problem in Land information the system establish the process.

Key words£ºLand Information Systems£»Data Quality£»Error£»Accuracy£»Remote Sensing£»Digitize£»Resolution£»Coordinate Transformation£»Vector Data£»Raster Data£»Topological.

 

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