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- For reasons you ll see later, we classify PostGIS data as vector data. 我们将PostGIS数据归类为矢量数据,其原因将在下文介绍。
- DLG, the vector data file, is widely used because vector data can be used for various spatial analysis. DLG是矢量数据文件,满足GIS各种空间分析的要求,用途广泛。
- The thesis discusses a method of vector data compression: subsection Douglas algorithm with the goniometry. 本文提出了一种矢量数据压缩方法:角度分段道格拉斯算法。
- At the same time, the stepless scale oriented information compression of vector data is also discussed. 同时也讨论了面向无级比例尺的矢量数据的信息压缩。
- OpenEV -A 2D/3D application for viewing and analysis of geospatial raster and vector data. 一个浏览和分析地球物理光栅和向量数据的2D/3D应用软件。
- OpenEV - OpenEV -A 2D/3D application for viewing and analysis of geospatial raster and vector data. 一个浏览和分析地球物理光栅和向量数据的2D/3D应用软件。
- The displaying of vector data graphic on PDA is one of important area in mobile GIS. 基于PDA的矢量图形的快速显示一直是移动GIS研究的一个重要方面。
- Design data are stored primarily as vector data;geographic data consist of a combination of vector and raster data. 设计数据基本上是以矢量数据的形式存储,而地理数据则包含矢量数据和光栅数据。
- Is is necessary to abstract the topology information from preprocessed image while converting grid data into vector data. 栅格格式数据转换为矢量格式数据时必须提取原图像上包含的拓扑信息。
- A vector clustering algorithm is proposed to cope with the inefficacy of traditional clustering algorithms to vector data. 针对传统聚类分析不能有效处理矢量数据聚类的问题,提出矢量聚类算法。
- This paper introduce a new method for automatic registration based on amalgamation of information on TM image and GIS vector data. 摘要介绍了一种新的基于信息融合的TM影像和GIS矢量数据自动配准方法。
- In GIS and cartology, the boundary searching of discrete object group is an important problem.The traditional algorithm is based on vector data. 摘要搜索离散目标群的边界是地界信息系统(GIS)和地图学中一个重要问题,传统的算法是基于矢量数据的。
- CHEN Chun,WANG Ye-qiao,BO Li-qun,et al.Fast intersection of vector data in GIS and its application[J].Scientia Geographica Sinica,1990,10(2):134-141. [3]陈春;王野乔;薄立群;等.;地理信息系统中矢量数据的快速求交及其应用[J]
- The calculation method of metallogenicl favourability degree used in this paper is a metallogenic prediction method based on vector data. 摘要介绍的成矿有利度计算法是一种基于矢量数据的成矿预测方法。
- Vector data require far less storage than raster data because arc node lists simplify and reduce the data required to make sense of the features contained in the map. 矢量数据要求的存储要比栅格数据少得多,因为弧节点列表简化并减少了表示地图中包含的特征所需的数据。
- In the land economic intrest and environment interest evaluation aspect, this paper present a model based on GIS vector data format and MIS data integration. 在城市用地经济效益、环境效益评价方面,本文提出了基于GIS矢量数据和管理信息系统(MIS)数据集成的数据模型和方法模型。
- By the experiment, we can draw a conclusion that the cadastral vector data transformation based on B plus tree index is an efficient method and has a bright future. 实验表明,基于B+树索引的数据转换方法,可大幅度提高数据转换的效率,是实现数据共享有效可行的、很有前景的一种方案。
- Took vector data as an example, classify the control level into map, layer, scale, mapsheet, region, geographical factor, and research the implementation of each control level. 以矢量数据为例将控制级别分为地图、图层、比例尺、图幅、区域、地理要素等,研究各粒度的访问控制方法的实现。
- This paper presents a statistic method called overlay-based to verify the different vector data sources when using the feature point-based matching in map conflation. 该文基于叠置方法对来自不同矢量数据集中的同名点特征匹配结果进行检验,以确保点特征匹配结果的可靠性。