基于ArcEngine的地理国情监测矢量数据质量检查系统开发研究

发布时间：2018-10-08 07:55

【摘要】：数据是GIS的重要组成部分,其质量的好坏直接影响着国家各行业、各部门利用GIS数据进行分析、决策的可靠性和正确性。因此,随着计算机技术和GIS技术的飞速发展,利用当前计算机技术对GIS数据,特别是对其中矢量数据的质量进行快速、有效的检查,从而提供正确、可靠以及科学的矢量数据就显得尤为重要。相比以往的地理信息数据,地理国情监测矢量数据作业范围更广,涉及的内容更多,准确性要求也更高,因此,对其矢量数据进行质量检查是一项艰巨的任务。目前,地理国情监测矢量数据质量检查软件主要存在两方面的问题:一方面,检查内容不够全面,检查效率不高;另一方面,通用性较低,不能满足数据组织与检查规则经常发生变动的情况。针对以上问题,本文以地理国情监测矢量数据为主要研究对象,设计了一套通用性较强的数据质量检查系统。首先,通过对地理国情监测成果数据标准进行详细分析,总结出其矢量数据的质量检查内容;其次,设计了质量检查过程中所需的数据库模版、方案数据库以及规则库;最后,对系统的体系结构与功能模块进行详细设计,通过编写相应代码来对系统进行开发研究。取得的主要成果如下:(1)设计了数据库模版、质量检查规则库、方案数据库以及结果数据库。数据库模板包含了待检数据的正确数据组织结构,解决了由于数据组织结构不同而难以实现质检系统通用的问题;方案数据库包含了针对特定待检数据的所有质量检查规则,用户可以通过修改方案数据库来实现对不同数据的质量检查;质量检查规则库包括了检查过程中涉及到的检查规则函数,进行拓扑检查时,需调用规则库中的检查函数;质量检查错误信息存储在检查结果数据库中,用户可根据数据库中的错误信息对数据进行修改。(2)根据GIS系统的设计原理、遵循系统统一性、安全性等设计原则,采用面向对象的软件开发方法对系统的体系结构与功能模块进行设计,并对图形图像管理模块、检查模块和结果管理模块三大功能模块进行详细设计。(3)基于ArcEngine组件,采用C#语言对系统进行开发。本系统不仅可以对地理国情监测矢量数据进行质量检查,还可以通过创建不同的方案数据库来对其他的地理信息数据进行质量检查。
[Abstract]:Data is an important part of GIS. The quality of data directly affects every industry in our country. All departments use GIS data to analyze the reliability and correctness of decision-making. Therefore, with the rapid development of computer technology and GIS technology, the quality of GIS data, especially the vector data, is checked quickly and effectively by using the current computer technology, so as to provide the correct. Reliable and scientific vector data is particularly important. Compared with the previous geographic information data, the scope of geographical monitoring vector data is wider, the content involved is more, and the accuracy requirement is higher. Therefore, it is a difficult task to check the quality of vector data. At present, there are two main problems in the software for checking the quality of vector data in geographical situation monitoring: on the one hand, the contents of the inspection are not comprehensive enough and the inspection efficiency is not high; on the other hand, the universality of the software is low. Failure to meet the frequent changes in data organization and inspection rules. Aiming at the above problems, this paper designs a data quality inspection system with strong generality, taking the vector data of geographical situation monitoring as the main research object. Firstly, through the detailed analysis of the data standard of the results of geographical situation monitoring, the content of the vector data quality inspection is summarized. Secondly, the database template, the scheme database and the rule base are designed for the quality inspection process. The architecture and function modules of the system are designed in detail, and the corresponding codes are written to develop the system. The main achievements are as follows: (1) Database template, quality check rule base, scheme database and result database are designed. The database template contains the correct data organization structure of the data to be checked, which solves the problem that it is difficult to realize the universal quality inspection system because of the different data organization structure. The user can modify the scheme database to realize the quality check of the different data, the quality check rule base includes the check rule function involved in the checking process, and the checking function in the rule base should be called when the topology is checked. The quality check error information is stored in the check result database, and the user can modify the data according to the error information in the database. (2) according to the design principle of GIS system, the design principles of system unity and security are followed. The architecture and function modules of the system are designed by using the object-oriented software development method. The graphic and image management module, the inspection module and the result management module are designed in detail. (3) based on the ArcEngine component, the system is designed in detail. C # language is used to develop the system. The system can not only check the quality of the vector data of geographical situation monitoring, but also check the quality of other geographic information data by creating different scheme databases.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208

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