摘要
GML已成为大家所接受并容易理解的一种适于网络的通用空间数据接口。本文设计了符合OGC标准的GML Application Schema(应用模式)文档并生成对应的GML文档数据,文中给出了模式文档的部分代表性元素的实现代码,并作出了相应的说明。该Schema文档可以作为对应。XML数据文件的校验依据,并进一步成为书写和读写这些数据文件源代码的基础。
GML(Geography Markup Language) is a geo-spatial data transfer form which is much suitable for web,and it is easy to understand and accept also. In this paper, based on a special data model, we designed a GML application schema document coinciding with GML3 standard through extending and assembling OGC GML3's criterion. Furthermore, a corresponding GML data file is generated. Some typical elements in this schema document are shown in xml with corresponding comment. The schema document can act as verifying basis for all the corresponding GML data files and serve for the foundation of the source codes written to read or write these data files. It's principle could be used to design another GML application schema for special purpose.
出处
《测绘科学》
CSCD
2004年第3期36-38,54,共4页
Science of Surveying and Mapping
