地理对象

实现数字地球中坐标转换与地理对象的查询

Implement of Converting Coordinate and Querying for Geographic Object in the Digital Earth

通过地理对象的代理对象来定义多表现，因此代理对象可以用来表示对象的视角多样性和角色多样性。

It allows geographic object to have multiple deputy objects which can be defined as its multiple representations since deputy objects can be used to represent object views and role multiplicity .

而目前许多GIS软件所采用的空间实体数据模型并不包含拓扑信息，故难以定量地计算、分析地理对象间的空间邻接关系。

Due to its scarcity of topological information , the entitative data model employed by lots of popular GIS software largely encumbers the quantitative analysis of spatial adjacency .

为实现空间复杂地理对象的聚类分析，文中给出了GIS及空间聚类分析技术，介绍了一种基于GIS的空间位置关系聚类分析算法。

In order to realize the clustering of complicated spatial geographical object , the paper introduces GIS and spatial clustering analyzing , and expores a clustering algorithm in GIS .

第三章详细讨论的地理对象服务器集群GSC的相关技术问题。

Chapter 3 discussed the main concerns in GSC in detail .

本文的第四章介绍了地理对象服务器GSC的设计和实现。

Chapter 4 introduced the design and implementing of GSC .

GSC包括三个主要组件：地理对象服务器GOS组、负载均衡服务器WBS和GSC应用程序开发环境。

GSC includes three components : GOSs group , WBS and the application programming circumstances .

空间数据分类模块能够对地理对象按照某个属性分类，利用分类结果为决策者提供决策支持，挖掘结果可以保存在XML文件中或者从文件中读取。

The spatial classification module can classify the geographic objects according to a pre-specified attribute , and the classification result can be used to provide decision support . The classification result can be saved to and loaded from an XML file .

与二维GIS相比，三维GIS表达的世界更能给人真实感、沉浸感，它以立体造型技术构造地理对象，不仅能表达空间对象的平面关系，而且能描述它们间的垂向关系。

Comparing with 2D GIS , 3D GIS provides human with realistic feeling and immersion feeling . It constructs geographic objects with three-dimensional formation technology . It describes not only the horizontal relationships of spatial objects , but also the vertical relationships .

GSC中GOS是对GNet地理对象服务器的扩展，主要体现在网络通信模块和地理对象管理模块。

A GOS in GSC has many extensions to a GOS in GNet , which mainly in network communicating module and geographical objects management module .

本文首先介绍了分布式GIS的相关概念、发展现状和目前面临挑战，然后讨论了对于浙江大学人工智能实验室的地理对象服务器GOS在分布式方面的扩展，由此提出了地理对象服务器集群GSC的架构。

This dissertation introduced the background , evolution and challenges to current GIS applications . Then , it discussed the extension to Geographical Object Server ( GOS ) in distributed aspect , Based on which , the dissertation proposed a cluster of GOSs-GSC .

STDM能够将地理对象的空间、时间及属性信息进行合理、有效的组织和管理，并能够重现历史状态，追踪变化，显示现状，预测未来。

STDM can organize and manage the space , time and attribute information of geographic objects , as well , it can reproduce the historical status , track changes , display the status quo and predict the future .

电子地图中地理对象的矢量化研究与系统实现

Vectorization Research on Geographic Elements in the Scanned Map and System Implement

基于粗糙模型的模糊地理对象空间拓扑关系研究

Topological Relations between Vague Objects Based on Rough Model

空间关联规则挖掘模块能够发现地图上的各种地理对象之间的位置关联关系。

The spatial association rule mining module can discover the location association among geographic objects in a map .

自然界中存在着大量模糊现象，地理对象定义中也存在模糊性。

There exist lots of fuzzy phenomena in the nature and the ambiguity in the definition of the geographical objects .

空间分析是基于地理对象的位置形态特征的空间数据分析，其基础是空间分析模型的建立。

Spatial analysis is based on the geographical location of the object morphology of spatial data analysis , the element is spatial analysis model building .

在粗糙集的基本概念上定义了二维离散空间中的粗糙区域和粗糙模型，基于粗糙模型描述了二维离散空间中的模糊地理对象，并给出了粗糙区域的类型。

Rough model is proposed to build vague regions based on upper and lower approximate sets of rough set theory after the definition of rough regions and rough model .

地学信息的表达方法。着重讨论了地学信息图谱研究关键要解决的三方面的地理学问题：地理对象的概括、地理学基本问题的分类、地理信息及其表达。

In order to find out effective ways of the methodology , the authors mainly discuss three key issues in geography : generalization of geographical objectives , classification of basic geographical information and its representation .

时空序列数据不仅描述了地理对象或现象存在的空间特征，而且有效地记录了地理对象或现象随时间的演变状态，因此对其研究具有重要的意义。

Not only can it describe the spatial characteristics of geographic objects or phenomena , but also can effectively record the time evolution of those . Consequently , the research in this field is more meaningful .

通过空间对象动态行为可视化表达能真实的模拟地理对象行为的时空变化过程与变化规律，预测地理对象行为的变化趋势，更直观地表达空间信息。

According to the visualized expression of spatial object 's Dynamic behaviour , we can simulate the Time-spatial change process and regulations factually , and predict the changing trend of geography objects ' behavior , and also express the spatial information visually .

对图元对象或地理对象的变化的内容进行了具体描述，包括产生、消失或版本变化，将这种描述记录在地形图数据库编辑软件的日志表中可以实现地形图的增量更新。

The paper describes the variety contents of graphic or geographic objects : formation , disappearance and version changes . Increment updating of relief map database can be realized by recording the description to log table of editing software of relief map database .

首先根据地图不同地理对象灰度级不同的特点，将地图中的文字等标注从地图中分离，然后用最大类间方差阈值分割法将地图进行二值化。

Firstly , words labels in the scanned gray map are separated from the map as its gray rank is different from the other objects ' in the map . Then the gray map is transformed into binary map by maximal threshold variance method .

从地理对象描述角度出发，对平面坐标转换进行了物理意义和几何意义的解释，并得到概括的数学模型，建立2类转换方法的参数计算公式。

Starting from the view point of the characterization of geological objectives , interpretation is made of the plane coordinate conversion from both its physical and geometrical significance . General mathematical model is obtained and the parameter calculation formulas for two types of conversion are established .

GeolocationAPI会返回一个地理位置对象Position。

The Geolocation API returns a geographical Position object .

空间、属性、时间是地理世界对象的三个基本特征，也是地理信息系统（简称GIS）数据信息的三种基本数据成分。

Space , attribute and time are three basic characteristics of the object of the geographical world , they are also three basic data elements of Geographic Information System ( referred to as GIS ) data .

地理定位对象是标准导航器对象的一部分，它有几个方法，最常用的是getCurrentPosition。

The geolocation object is part of the standard navigator object .

针对地理空间对象的自身不确定性同时结合模糊隶属度理论，得出模糊概率场概念。

Based on the uncertainty of geographical spatial object , we obtain the fuzzy probability field concept based on fuzzy membership degree theory .

地理特征对象是时空数据组织的基本单元，而事件是导致时空数据发生变化的根本原因。

The feature is an essential element that comprises spatiotemporal data information and the event is a fundamental factor that result in changing spatiotemporal data .

提出了面向地理空间实体对象树模型（FOOT），首先重点讨论了空间分区、空间聚簇、空间索引，然后分析了四层结构设计中的数据库服务层、应用接口层、应用层相关技术。

A geo-spatial data model of feature-oriented object tree ( FOOT ) is presented . Spatial partitioning , spatial clustering and spatial indexing were emphatically discussed . Database services , application interface and application services in Four Tier Architecture are analyzed .