铁路地理信息系统(RGIS)元数据问题研究

Study on Metadata Problem for Railway Geographic Information System

分析铁路办公数据在存储、使用和维护等方面的特点后,根据元数据的一般概念和作用,提出铁路地理信息系统(RGIS)元数据在RGIS中的主要作用,包括作为RGIS数据目录、描述RGIS数据集内容、数据质量和历史信息以及提升RGIS数据可读性等5个方面。探讨RGIS元数据的具体构成内容,为RGIS中元数据的建设提供了思路。

After analyzing the characteristics of the railwaybusiness data in storing, using and maintaining, the paper shows the main functions of the metadata in RGIS according to common concepts and functions of metadata, including the RGIS data catalogue, description of the contents, the qualitative information and the history information of RGIS Datasets, and improving the readaptability of RGIS data. It further explores the specific construction contents of the RGIS metadata and paves the way for the building of the RGIS metadata.