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《Science of Surveying and Mapping》 2011-03
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Query and application of GML-based land use spatial data

WU Bao-you,ZHANG Shan-shan,YAO Feng(School of Geosciences and Environmental Engineering,Central South University,Changsha 410083,China)  
In this paper a land use data model which is based on GML and accorded to the national standards of GML 3.2 was proposed,and the data derived from the Second National Land Survey were taken for the example.Because it is difficult for traditional XML query language to query spatial data,a new spatial query method for GML data which is based on the open source version of Saxon XQuery Engine to extent spatial query method was raised in this paper,and then investigate the land use spatial object query model based on GML and XQuery.A GML query system for land use was developed based on C,DOM,XQuery and Saxon,and the result showed that land use data model based on GML and the query method based on XQuery and Saxon,which query spatial data and spatial relationshi Pbetween land use spatial objects based on GML,is valid and reliable.
【Fund】: 湖南省自然科学基金资助项目(07JJ6076)
【CateGory Index】: P208
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