In this paper, several GIS vector data structure models are analyzed and discussed deeply, also their adaptability on PDA are pointed out.
基于掌上电脑，对几种GIS矢量数据组织模型进行了分析和深入讨论，指出了其在掌上电脑上的适应性。
Finally, according to the definition of difference, this article judges the imperceptibility of watermark algorithm for the GIS vector data through the operation of spatial analysis.
最后，本文从差异性定义出发，通过空间分析操作，判断面向GIS矢量数据水印系统的不可感知性。
QGIS handles all three — raster, vector, and database — a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
QGIS处理所有三种数据——栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
Applications store GIS data using two distinct data structures: raster data and vector data.
应用程序使用两种不同的数据结构存储GIS数据：栅格数据和矢量数据。
Life changes for the GIS specialist when vector-based data formats appear.
基于矢量的数据格式的出现改变了GIS专家的生活。
QGIS handles all three - raster, vector, and database - a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
QGIS处理所有三种数据栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
Import and export vector and raster data, convert between different GIS data formats.
导入和导出矢量数据及栅格数据，实现多种GIS数据格式之间的转换。
The analysis toolbox was designed to perform analysis of vector data in a geographic information system (GIS).
分析工具箱的设计目标是在地理信息系统(GIS)中进行矢量数据分析。
But most of topographical map database produced by survey department is only cartographic data, which is vector data structure, but cannot be imported into GIS directly to meet GIS using.
但测绘部门建立的地形图数据库多为单纯的制图数据，虽然与GIS数据一样是矢量结构，却无法直接输入GIS以满足应用需要。
Map projection transformation of vector data is becoming mature presently, but research and application of raster data projection transformation in GIS needs further efforts.
当前GIS中矢量数据的投影变换已日趋成熟，而栅格数据的投影变换的研究与应用还需要进一步的深入。
Efficiently compressing vector map data is the basic requirement of an embedded GIS.
满足功能并对矢量地图数据进行高效压缩，是嵌入式GIS系统的基本要求。
Each toolset performs specific GIS analysis of vector data.
每个工具执行特定的地理信息系统矢量数据的分析。
The key to realize the combining process of GIS and RS is the technique of format conversion between vector data and grid data.
矢量格式数据和栅格格式数据的相互转换技术是实现GIS、RS结合的关键。
The algorithm of transferring vector polygon to raster data is one of the basic algorithms of GIS.
矢量多边形的栅格化算法是地理信息系统的基础算法之一。
Vector and raster are two basic formats of geospatial data used in GIS.
矢量和栅格是GIS应用中两种基本的地学数据格式。
How to express, organize and process the global multi-scale spatial data better, particularly the massive vector data, has become a problem that attracts common attention from the GIS scholars.
如何更好地表达、组织与处理全球多尺度空间数据，尤其是海量矢量数据，已成为GIS学者普遍关注的问题。
Because of their advantages such as small data size, high precision, lossless scaling and easiness to manipulate, vector digital maps are the most important resources in GIS.
其中矢量形式的数字地图由于具有数据量小，精度高，可以无损缩放，便于进行各种操作等优点，是GIS中最重要的资源。
Point, line and area are basic elements in GIS vector spatial data.
在矢量GIS空间数据中，点、线和面目标是它的基本要素。
This paper gives a review on vector data compression of mobile GIS.
文章针对移动GIS系统中的矢量数据压缩问题进行了总结与综述。
Most commercial GIS software only offer the simple algorithm of global sense to transform the vector data.
一般的商业软件只提供比较简单的算法，能够对矢量数据几何纠正实现简单的、全局意义上的处理。
It is the basic function for GIS to get unit polygon by overlaying the vector map, but the uncertainty of polygon is the disastrous factor affecting GIS's data quality.
用矢量基础图件叠加来获取单元图斑的方法是GIS的基本功能，但叠加多边形的不确定性成为影响GIS数据质量的灾难性因素。
Through exploiting the applying program of Oracle database based on J2EE, the access of vector graphics data is realized and a new method of developing vector figure system on GIS is brought forward.
通过开发基于J2EE构架的Oracle数据库应用程序，实现了矢量图形数据的存取，提出了一种开发GIS矢量图形系统的新思路。
Through exploiting the applying program of Oracle database based on J2EE, the access of vector graphics data is realized and a new method of developing vector figure system on GIS is brought forward.
通过开发基于J2EE构架的Oracle数据库应用程序，实现了矢量图形数据的存取，提出了一种开发GIS矢量图形系统的新思路。
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