土地房产GIS空间要素的GML模型与实现

Modeling Spatial Features Based on Geography Markup Language in GIS

在分析土地房产要素特点的基础上,探讨了土地房产空间要素的GML模型及其应用。基于GML语言设计了土地房产空间要素的XML Schema模式,定义和描述了土地房产要素及其属性,探讨了基于 XML和XQuery实现大数据量的地籍对象查询。利用 Java、DOM和 SAX开发了一个基于 GML的土地房产 GIS系统,实现了土地房产权籍要素图形和属性的一体化管理。系统应用表明了所提出的模型和实现是可行的。

Modeling spatial features in land and housing geographic information system (GIS) based on Geographic Markup Language (GML) is studied. The characteristics of the land and housing spatial features are analyzed, and the land and housing spatial features description based on GML is put forward. A schema defining the GML structure is given, in which both the geometry and attribute information of the features are incorporated, and the relationship between these features is described by the member model. The query models of the land and housing spatial features and the topology relationship between them are further presented, and a query algorithm is given based on XML and XQuery technology. An application system used to manage land and housing information is developed based on JAVA, DOM and SAX. The implementation of the proposed models is tested and the result proves the capability of the models and methods.