空间数据对于地理信息系统就如同汽油对于汽车一样重要.空间数据的质量更是地理信息系统分析结果是否准确和合理的重要因素.因此根据质量评价方法的不同,提出了相应的空间数据质量模型,并进而提出空间数据质量的度量模型,这对科学、合理地进行数据质量评定及准确、统一的质量表达将起到概念级指导意义.

Spatial data for geographic information system is as important as the petrol for vehicle. Spatial data quality is more important factor for evaluating 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 for evaluating the spatial data quality, and a measurement model of spatial data quality is also given. Both two models, which are used for scientific and reasonable assessment of data quality as well as exact and unitary representation of data quality, are of great importance at conceptual level.