期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B4
页码：1773-1778
出版社：Copernicus Publications
摘要：In the last three decades, dozens of GIS data formats have been developed for encoding geographic information. Most were specified formats to particular vendor's GIS software. A few were open standards created to enable inter-vendor communication. As the Internet continues to expand rapidly the GIS can benefit greatly from the potential offered by Web based data delivery. A new common geodata format known as the Geography Markup Language (GML) has been specified by the OGC (Open Geospatial Consortium) through a unique marriage of the W3C's (World Wide Web Consortium's) XML (Extensible Markup Language). GML has advantages as XML-based geospatial data format. It is an open standard, which is easy to be manipulated and exchanged between different computer platforms and applications. GML will enable the development of a geospatial world wide web in which common data elements are shared between many data providers over the Internet enabling geodata to be locally developed, and globally integrated. Since GML only includes the content of the Geodata, a new vector graphic format: Scalable Vector Graphics (SVG) is used for presentation until a direct visualization tool for GML is created based on XML. This paper shows how GML is derived, how geodata can be stored and transferred in GML and visualized in SVG, convert GML to SVG via Extensible Stylesheet Language Transformations (XSLT), and make the SVG graphic dynamic with Hypertext Markup Language (HTML), Document Object Model (DOM), or JavaScript
关键词：GML; Internet; Spatial Data Sharing; Geometry; Visualization
