面向沟谷特征点簇的空间结构模型与应用  

The Spatial Structural Model Established for Gully Feature Points Cluster and Its Application

作　　者：朱红春[1,2] 李永胜 汤国安[2] 

机构地区：[1]山东科技大学测绘科学与工程学院,青岛266590 [2]南京师范大学虚拟地理环境教育部重点实验室,南京210023 [3]中冶地集团西北岩土工程有限公司,西安710119

出　　处：《地球信息科学学报》2014年第5期707-711,共5页Journal of Geo-information Science

基　　金：国家自然科学青年基金项目(41001294);国家自然科学基金重点项目(40930531);"资源与环境信息系统国家重点实验室"开放基金项目(2010KF0002SA)

摘　　要：点簇(即点的集合)具有特定的组织结构;沟谷作为一类自成体系的重要空间实体,表达其形态、结构、发育等关键属性特征的沟谷特征点簇,是有严密的组织结构、密切的空间关系和完整的属性描述的关键特征点的集合。建立沟谷特征点簇的空间结构模型,进行沟谷特征的空间分析与应用,具有重要的科学意义。本文在分析沟谷特征点簇的组成要素、空间与结构特征的基础上,确定了点簇的层次结构模型和非结构化文件存储方式,编程实现了沟谷特征点簇数据模型;然后,构建了点簇文件,并运用C#+AE的开发方式,研发建立了基于点簇的沟谷分析原型系统,实现了沟谷特征点簇数据的可视化、结构空间分析、专题属性特征分析等基本功能;最后,以特征点的沟谷路径追溯查找效率作了对比分析,验证了基于特征点簇模型的沟谷分析具有较高的处理效率。本研究构建的面向沟谷特征点簇的空间结构模型,研发的具有沟谷结构、形态与属性分析功能的沟谷分析原型系统,有一定的应用价值。Points cluster is a set of points which generally have its specific organizational structure. Gully is a self-contained class and important spatial entity, so the gully feature point cluster which expresses and describes gully＇ s morphology, structure and the key attributes have tight organizational structure, close spatial relationship and complete description of the properties. Establishing the spatial structure model of gully feature point cluster and applying the model to the gully features＇ spatial analysis and application have important scientific significance. There are some important completed works. Firstly, based on analyzing the elements, spatial and structural characters of gully feature point cluster, the existing stored method of spatial data point information was analyzed. By using object-oriented modeling ideas, the gully feature point cluster data model was designed for describing gully＇ s topology and other spatial information based on hierarchical model and unstructured file storage. The gully feature point cluster data model was achieved by C#. And then, based on the point cluster file, the prototype system was researched and designed. Through using visual C# and ArcEngine, visualization （tree struc- ture）, spatial analysis （correlation structure）, property characteristics analysis （statistics, and hydro-geomorpho- logical analysis） and other basic functions of gully feature point cluster were realized initially. Finally, as a case study, the feature points retrospective sought, the processing time was comparatively analyzed and the time-consuming and point number relationship figure was drawn. The analysis verified the documents based on feature points cluster analysis with a more gully high processing efficiency. In this study, a new idea using point cluster model for gully analysis of expression was practiced. Established the point cluster prototype system orienting valley structure, morphology and properties analysis functions has some practical application value.

关 键 词：点簇模型 沟谷特征点簇 面向对象 空间结构 功能设计 沟谷分析 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]