| ARC E00向GML数据格式转换无损性的研究 |
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| 引用本文： | 张垒,李岩.ARC E00向GML数据格式转换无损性的研究[J].测绘科学,2009,34(6). |
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| 作者姓名： | 张垒 李岩 |
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| 作者单位： | 1. 华南师范大学计算机学院,广州,510631
2. 华南师范大学空间信息技术与应用研究中心,广州,510631 |
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| 基金项目： | 广东省百项工程和重点引导项目 |
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| 摘 要： | GML标准被视为空间数据集成和有效地解决异构数据共享的关键技术之一,但对其空间数据转换的无损性尚未能给予高度地重视。本文在分析了GML标准特点的基础上,以E00格式向GML标准转换为例,试图通过对两种数据结构的深入剖析,给出了GML3.1的数据转换模型。文章还对E00到GML3.1的点、线、多边形、投影、Tic、注记、拓扑的转换进行了转换结果的无损性讨论,分别从数据精度和数据段数量统计角度进行比较分析。实验证明,本文提供的数据转换方法具有空间信息转换无损特性,在转换的精度和转换的内容上都保持了不变,能够满足基于GML的多源异构空间数据转换的要求。
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| 关 键 词： | 多源空间数据 转换模型 GML 无损转换 |
ARC E00 to GML transformation lossless work |
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| ZHANG Lei,LI Yan.ARC E00 to GML transformation lossless work[J].Science of Surveying and Mapping,2009,34(6). |
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| Authors: | ZHANG Lei LI Yan |
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| Abstract: | The GML standard is regarded as a key technology to implement heterogeneous spatial data sharing, but enough attention didn't be paid to the non loss property of spatial data transformation. After analyzing the GML characteristics, try to analyze two kinds of data structure deeply, present a model for GML3.1 data transformation, and give a solution to the lossless transformation between multi-source heterogeneous spatial data. The paper also discusses the lossless transformation from E00 to GML3.1, including all the elements such as point, line, polygon, projection, Tic, Annotation and topology. Considering the data accuracy and data paragraphs statistics of the spatial data, it can prove that the method can keep the transformed data lossless, the transformation of the accuracy and content have maintained unchanged, and be able to meet the requirement of the GML-based multi-source heterogeneous spatial data transformation. |
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| Keywords: | GML multi-source spatial data transformation model GML lossless transformation |
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