矢量数据

基于Internet的矢量数据远程查询设计

Design of Distant Inquiry of Vector Data Based on Internet

基于实体模型的三维GIS矢量数据管理

Management of 3D GIS Vector Data Based on Feature-oriented Model

GIS矢量数据中的居民地要素层可视化一直是GIS用户重点关心的问题。

The resident visualization is always attached importance to GIS user .

面向二维GIS矢量数据三维可视化的地形匹配技术研究

Terrain Matching for Three-dimensional Visualization of Two-dimensional GIS Vector Data

基于格网索引的GIS矢量数据拓扑重建研究

A Study on Topological Reconstruction of GIS Vector Data Based on Grid Index

GIS中矢量数据栅格化的误差估计

Error Estimate of the Conversion from Vector Data to Grid Data in GIS

GIS矢量数据多功能版权保护研究

Study of Multi-purpose Copyright Protection of GIS Vector Data

GIS矢量数据的网络渐近传输研究

Progressive transmission of GIS vector spatial data over Internet

一种三维GIS矢量数据结构的研究&以矿山应用为例

The study on 3D GIS vector data structure

矢量数据的B样条曲线拟合算法被广泛地应用于数据的可逆压缩和矢量曲线数据的数学表达。

The B-spline curve-fitting algorithm is widely used in reversible compression of vector curve data and its mathematic expression .

移动GIS中的空间矢量数据压缩方法

Vector Data Compression of Mobile GIS

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。

Applications store GIS data using two distinct data structures : raster data and vector data .

矢量数据拓扑关系的自动建立是GIS软件的核心模块之一，也是技术难点之一。

It 's one core module and nodus to create topological relationship automatically in GIS software .

TM影像与GIS矢量数据的自动配准

Automatically Registration of TM Image and GIS Vector Data

在该部分，以Oraclespatial为例，讨论了矢量数据模型的简单数据结构；

The simple data structure of vector model is introduced using the ORACLE SPATIAL as an example .

该技术旨在将扫描的工程图像转换为与CAD系统相兼容的矢量数据格式。

Engineering drawing recognition technique aims at converting scanned engineering drawing images into vector formats compatible with CAD systems .

矢量数据的生产无论是在地图制图还是GIS领域都占有举足轻重的地位。

The production of vector data take a very important role not only in cartography , but also in GIS field .

矢量数据符号化是GIS中空间信息可视化的一种主要方法，通常是采用完全基于矢量技术的算法实现。

Vector data symbolization is a main method of GIS spatial information visualization . It is usually realized based on vector technique .

服务于PDA的矢量数据分块存储数据结构的研究

Data Structure of Sliced Saving Vector Data for PDA

矢量数据包含由x和y坐标，经常还有z（立面）坐标所定义的几何图形。

Vector data contains geometric shapes defined by x and y coordinates , and frequently z ( elevation ) coordinates .

一种大区域地貌矢量数据的DEM快速生成与粗差检测算法

An Algorithm of Fast Producing DEM with Large Range Vectorial Terrain Data and Errors Detecting

这种三维矢量数据模型由面向对象的二维GIS发展而来，符合人们处理GIS基本元素对象的习惯，GIS系统由二维向三维的过渡也较易实现。

This kind of 3D vector data model develops from the object-oriented 2D GIS and accords with the custom of processing the GIS element .

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。

In this paper , several GIS vector data structure models are analyzed and discussed deeply , also their adaptability on PDA are pointed out .

更新调查矢量数据与第二次土地调查DOM套合方法探讨

Method for Data Fitting Between Vector of Updated Survey and DOM of the Second Land Investigation

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。

Map projection transformation of vector data is becoming mature presently , but research and application of raster data projection transformation in GIS needs further efforts .

首先详细分析了GIS矢量数据的特点以及多重水印的研究基础，然后归纳总结出基于GIS矢量数据的四种多重水印嵌入模式，为相关的多重水印研究提供了一定的借鉴。

First , a detailed analysis of the characteristics of GIS vector data and research base of multiple watermarking , and then propose the four multi-watermarking embedding modes .

矢量数据符号化方法在CAC中的重要性研究

Method of Symbolic Vector Data in the Study of the Importance of CAC

MapInfo是地理信息系统的一个应用开发平台，屏幕数字化是把栅格数据变成矢量数据的一种方法。

Map Info is a GIS developing platform for application , and the screen digitalization is one of methods which changing raster data into vector data .

论文的主要研究内容和结论如下：（1）研究当前典型的GIS矢量数据数字水印单值算法。

The major contents of studying and conclusions of this dissertation are as follows : ( 1 ) The paper studies the current typical single-value watermarking algorithms of GIS vector data .

DLG是矢量数据文件，满足GIS各种空间分析的要求，用途广泛。

DLG , the vector data file , is widely used because vector data can be used for various spatial analysis .