【摘要】 以ARC/INFO为技术平台建立的1 : 20万数字地质图空间数据库,是GIS应用分析的重要数据源,空间数据库建设的质量和有效性是数据库建设的关键。切实有效的建库工作流程,数据采集初期的细心程度和采集方式,可靠的数据转换方式以及对数据误差的正确分析处理,针对图形数据的特征并根据图形建库目的建立质量评价标准,是对数据库建设质量的有效保证。更多还原

【Abstract】 The data bank of 1:200,000 digital geological maps which is set up based on the ARC/INFO technical platform is an important data source for GIS application analysis.The quality and effectiveness of the spatial data bank is the key problem in setting up the date bank.Practicable and effective running procedure for setting-up of the data bank,carefulness and collection ways in the initial stage of data collection,reliable data transformation means and right analysis and treatment of data error all are the effective measures for the quality guarantee of the data bank construction.In order to guarantee the quality of the data bank the criteria for quality evaluation are established based on the characteristics of figure data and the aim for setting up figure data bank.更多还原