城镇燃气管网GIS建设和管理中的数据源误差控制

Deviation Control of Data Source in Town Gas GIS Construction and Management

城镇燃气管网GIS在建设、管理过程中可能会遇到来源不同的数据,不同数据之间往往会存在拓扑关系上的矛盾。本文从武汉市天然气有限公司GIS建设和管理的具体情况出发,尝试探讨如何充分利用各种数据来源的优势,最大限度地保持数据的连续性,控制误差,提高数据可靠性。

In the construction or management of town gas GIS, We will process data from all kinds of sources. However, data from different sources also means contradiction in topology. In this thesis, in order to improve the reliability of GIS, I will analysis the superiority of different data source, and the way to maintain the continuity of the data, and manage to control the deviation from data sources.