Design And Implement Of Spatial Data Checking And Supervising System

Spatial data is indispensable component for Geographic Information Systems (GIS), and its quality greatly impacts and restricts usability for GIS. To furnish satisfied spatial data for GIS users is one of the important roles in GIS constructions.Spatial data's quality control is for its feature, which mainly involves data integrity,data logic consistency,data precision,data attribution precision,data time precision and some instructions on data. Spatial data quality inspection uses a series of valid ways to inspect spatial data quality so as to guarantee data's quality.Traditional data quality inspection largely includes manual inspection, and many shortcomings exist in inspection ways,inspection content,inspection spending,inspection efficiency, inspection results is informal false and lowly-effective. In current society with increasing digit products, the method will be washed out of mainstream inspection means kits.The advent of digit inspection software which collects 4D products, the research task in this paper bases on this background to develop, which is as follows:1. introduces basic geographic information digit product quality inspection system's research sense, research actuality, research purpose, research content, inspection methods and technique route.2. introduces the basic geographic information digit product data inspection rules, quality inspection's relative standard and inspection content.3. presents the system's analysis method, and gives full introduction for the system's design rule and develop platform, develop means and system's frame.4. particularly discuss the technique using in the system, involves:inspection standards and database design, border-meeting inspection techniques5. display the system's some function realization's effective graph, and give some relative illustrations.The paper summarizes the task's main conclusion and states some existing shortage, prospect some certain further research work.