Study on Spatial Data Quality Model
空间数据质量模型研究

Spatial data for geographic information system is as important as the petrol for vehicle. Spatial data quality is more important factor for ev aluating the analysis results if they are correct or reasonable in GIS. In this paper, a spatial data quality model is presented according to the method used fo r evaluating the spatial data quality, and a measurement model of spatial data q uality is also given. Both two models, which are used for scientific and reasona ble assessment of data quality as well as exact and unitary representation of da ta quality, are of great importance at conceptual level.