随着G IS的快速发展,人们对空间数据的需求也日益增大,如何让用户对空间数据有更直观更为简便的了解,成为G IS 2次开发的1个热点。ArcG IS Engine是基于G IS 2次开发的典型代表,针对ArcG IS Engine能脱离专业软件环境这一特点,根据果园...随着G IS的快速发展,人们对空间数据的需求也日益增大,如何让用户对空间数据有更直观更为简便的了解,成为G IS 2次开发的1个热点。ArcG IS Engine是基于G IS 2次开发的典型代表,针对ArcG IS Engine能脱离专业软件环境这一特点,根据果园园区管理实际需要,建立了忠县三维果园管理平台。展开更多
GIS is a computerized database management system that provides geographic access (capture, storage, retrieval, analysis and display) to spatial data. Civil Engineering projects involve the management, analysis and int...GIS is a computerized database management system that provides geographic access (capture, storage, retrieval, analysis and display) to spatial data. Civil Engineering projects involve the management, analysis and integration of large amounts of geographic information to ensure success. This can include a wide range of information such as detailed design drawings originating from CAD solutions, detailed mapping, air photography, geological investigations, population information, traffic flows and environmental models. Although there are some similarities between CAD and GIS there are many differences. The most fundamental difference is that GIS mode is the world as it exists, whereas CAD models artifacts yet to be produced. As a result the data manipulated by a GIS is an order of magnitude larger and more complex than CAD systems have to deal with, and the nature of the data, its sources and its uses are quite different. In this paper, the selected area was Nahrain University. Many data were saved on the site map as a transparence layers built by using AutoCAD (2006). Then a digital library was built for the selected area and many data were saved on the site map as a themes built by using ArcView software.展开更多
空间数据库引擎(SDE,Spatial Data Engine)作为中间件能较好地解决地理信息系统(GIS,Geographical Information System)中空间数据和属性数据统一存储和管理的问题。论文首先探讨了管线数据库的常用解决方案,再重点阐述了ArcSDE的数据...空间数据库引擎(SDE,Spatial Data Engine)作为中间件能较好地解决地理信息系统(GIS,Geographical Information System)中空间数据和属性数据统一存储和管理的问题。论文首先探讨了管线数据库的常用解决方案,再重点阐述了ArcSDE的数据库存储方法,最后通过实例详细论述了ArcSDE对管网空间及属性数据的一体化管理方法,对其他城市管网系统的建库工作提供了一定的参考价值。展开更多
随着空间信息技术不断发展,以及Oracle数据库规模的不断扩大、容量的不断增加,对Oracle数据库的性能的要求也不断提高。如何提高Oracle数据库的效率,如何解决海量空间数据的优化问题,成为数据库管理员面临的一个重要课题。在实际应用Ora...随着空间信息技术不断发展,以及Oracle数据库规模的不断扩大、容量的不断增加,对Oracle数据库的性能的要求也不断提高。如何提高Oracle数据库的效率,如何解决海量空间数据的优化问题,成为数据库管理员面临的一个重要课题。在实际应用Oracle数据库和ArcSDE空间数据库引擎的过程中,逐步总结了与空间信息访问速度息息相关的数据库服务器配置和ArcSDE(Sapatial Data Engine)空间数据库引擎配置两个主要方面的优化方法。通过调整组成SGA(System Global Area)的内存结构的大小,避免磁盘竞争、减少磁盘I/O次数,合理分配数据块空间,提高性能、确定回滚段数量,有利于频繁进行少量数据修改的联机事物处理、修改优先权,提高响应时间和竞争、调整索引格网单元整体优化空间数据的响应和系统性能等,形成了一套典型的空间数据存取优化方案。展开更多
With a review of the recent development in digitalization and application of seabed data, this paper systematically proposed methods for integrating seabed data by analyzing its feature based on ORACLE database manage...With a review of the recent development in digitalization and application of seabed data, this paper systematically proposed methods for integrating seabed data by analyzing its feature based on ORACLE database management system and advanced techniques of spatial data management. We did research on storage structure of seabed data, distributed-integrated database system, standardized spatial database and seabed metadata management system in order to effectively manage and use these seabed information in practical application. Finally, we applied the methods researched and proposed in this paper to build the Bohai Sea engineering geology database that stores engineering geology data and other seabed information from the Bohai Sea area. As a result, the Bohai Sea engineering geology database can effectively integrate huge amount of distributed and complicated seabed data to meet the practical requisition of Bohai Sea en-gineering geology environment exploration and exploitation.展开更多
电力线路工程勘测设计涉及大量的地理信息数据,包括地形地貌、建筑物、植被、矿区、保护区等信息和数据,通过地理信息系统(Geographic Information System,GIS)技术可以快速、准确地获取这些空间数据,为后续的设计工作提供基础资料,优...电力线路工程勘测设计涉及大量的地理信息数据,包括地形地貌、建筑物、植被、矿区、保护区等信息和数据,通过地理信息系统(Geographic Information System,GIS)技术可以快速、准确地获取这些空间数据,为后续的设计工作提供基础资料,优化线路路径。对此,阐述新型GIS技术的概念,重点分析我国电力线路工程勘测设计手段的现状,针对新型GIS技术对电力线路工程勘测产生的影响,进行基于新型GIS技术的电力线路工程勘测设计应用探讨。展开更多
文摘随着G IS的快速发展,人们对空间数据的需求也日益增大,如何让用户对空间数据有更直观更为简便的了解,成为G IS 2次开发的1个热点。ArcG IS Engine是基于G IS 2次开发的典型代表,针对ArcG IS Engine能脱离专业软件环境这一特点,根据果园园区管理实际需要,建立了忠县三维果园管理平台。
文摘GIS is a computerized database management system that provides geographic access (capture, storage, retrieval, analysis and display) to spatial data. Civil Engineering projects involve the management, analysis and integration of large amounts of geographic information to ensure success. This can include a wide range of information such as detailed design drawings originating from CAD solutions, detailed mapping, air photography, geological investigations, population information, traffic flows and environmental models. Although there are some similarities between CAD and GIS there are many differences. The most fundamental difference is that GIS mode is the world as it exists, whereas CAD models artifacts yet to be produced. As a result the data manipulated by a GIS is an order of magnitude larger and more complex than CAD systems have to deal with, and the nature of the data, its sources and its uses are quite different. In this paper, the selected area was Nahrain University. Many data were saved on the site map as a transparence layers built by using AutoCAD (2006). Then a digital library was built for the selected area and many data were saved on the site map as a themes built by using ArcView software.
文摘空间数据库引擎(SDE,Spatial Data Engine)作为中间件能较好地解决地理信息系统(GIS,Geographical Information System)中空间数据和属性数据统一存储和管理的问题。论文首先探讨了管线数据库的常用解决方案,再重点阐述了ArcSDE的数据库存储方法,最后通过实例详细论述了ArcSDE对管网空间及属性数据的一体化管理方法,对其他城市管网系统的建库工作提供了一定的参考价值。
文摘随着空间信息技术不断发展,以及Oracle数据库规模的不断扩大、容量的不断增加,对Oracle数据库的性能的要求也不断提高。如何提高Oracle数据库的效率,如何解决海量空间数据的优化问题,成为数据库管理员面临的一个重要课题。在实际应用Oracle数据库和ArcSDE空间数据库引擎的过程中,逐步总结了与空间信息访问速度息息相关的数据库服务器配置和ArcSDE(Sapatial Data Engine)空间数据库引擎配置两个主要方面的优化方法。通过调整组成SGA(System Global Area)的内存结构的大小,避免磁盘竞争、减少磁盘I/O次数,合理分配数据块空间,提高性能、确定回滚段数量,有利于频繁进行少量数据修改的联机事物处理、修改优先权,提高响应时间和竞争、调整索引格网单元整体优化空间数据的响应和系统性能等,形成了一套典型的空间数据存取优化方案。
文摘With a review of the recent development in digitalization and application of seabed data, this paper systematically proposed methods for integrating seabed data by analyzing its feature based on ORACLE database management system and advanced techniques of spatial data management. We did research on storage structure of seabed data, distributed-integrated database system, standardized spatial database and seabed metadata management system in order to effectively manage and use these seabed information in practical application. Finally, we applied the methods researched and proposed in this paper to build the Bohai Sea engineering geology database that stores engineering geology data and other seabed information from the Bohai Sea area. As a result, the Bohai Sea engineering geology database can effectively integrate huge amount of distributed and complicated seabed data to meet the practical requisition of Bohai Sea en-gineering geology environment exploration and exploitation.
文摘电力线路工程勘测设计涉及大量的地理信息数据,包括地形地貌、建筑物、植被、矿区、保护区等信息和数据,通过地理信息系统(Geographic Information System,GIS)技术可以快速、准确地获取这些空间数据,为后续的设计工作提供基础资料,优化线路路径。对此,阐述新型GIS技术的概念,重点分析我国电力线路工程勘测设计手段的现状,针对新型GIS技术对电力线路工程勘测产生的影响,进行基于新型GIS技术的电力线路工程勘测设计应用探讨。
