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通过集成式GIS平台和组件式GIS平台多个方面的比较,阐述了组件式地理信息系统是适应软件组件化潮流的新一代地理信息系统,并讨论了组件式地理信息系统的技术基础和特点,进而探讨了组件式地理信息系统在行业开发中的应用。 相似文献
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PowerComMap的设计与实现 总被引:1,自引:0,他引:1
以组件式地理信息系统的设计为核心,重点介绍了组件式地理信息系统平台PowerComMap的设计,并主要以其数据访问组件的实现为例,说明了组件式软件并不是传统软件的简单“包装”。 相似文献
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基于组件式GIS-SuperMap Objects的二次开发 总被引:9,自引:0,他引:9
组件式GIS是GIS与组件技术相结合的新一代地理信息系统。介绍了地理信息系统和组件式GIS的基本概念、组件式GIS的基本优点,以及SuperMap Objects组件开发平台的组成、功能划分和数据组织。阐述了使用SuperMap Objects组件进行GIS应用软件二次开发的一般方法和步骤,以及在VB中使用SuperMap Objects组件对象的基本步骤,并以VB为开发环境,结合SuperMap Objects核心组件,给出了一个能把空间数据库的数据进行地图显示的实例程序,演示了如何使用SuperMap Objects组件进行GIS应用软件的二次开发。 相似文献
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组件式地理信息系统开发课程的教学改革探讨 总被引:1,自引:0,他引:1
阎波杰 《测绘与空间地理信息》2011,(6):4-6
论述了GIS专业教学发展与现状,探讨了组件式地理信息系统开发课程的教学目的及其在GIS专业的地位与重要性,最后结合本人组件式地理信息系统开发课程的教学,总结探讨了教学过程中一些新思路与新的教学方法。 相似文献
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以组件式地理信息系统的设计为核心,重点介绍了组件式地理信息系统平台PowerComMap的设计,并主要以其数据访问组件的实现为例,说明了组件式软件并不是传统软件的简单"包装". 相似文献
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基于组件重用技术实现GIS的地图注记对象 总被引:3,自引:0,他引:3
网络技术的发展促使软件开发从桌面转向企业化,也对地理信息系统(GIS)应用提出了更高的要求。基于组件的分布式GIS成为现今发展的潮流。本文总结了软件重用技术的发展过程,阐述了基于组件重用机制的特点。以ESRI公司的组件式GIS-MapObjects为平台,针对其没有提供注记数据类型、不便于编辑等问题,提出一种变通的方法加以解决,并利用组件重用技术进行自定义注记对象的设计和实现。最后对如何高效地开发企业级GIS应用系统的方法进行了总结。 相似文献
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基于MopObject的地图符号注记组件的实现 总被引:6,自引:0,他引:6
随着人们对空间位置重要性的认识,地理信息系统(GIS)已得到广泛地应用。本文对ESRI公司的组件式地理信息系统(GSI)软件MopObject(以下简称MO)中不同的符号绘测手段进行了介绍和比较,在此基础上,提出了一种基于组件的参数化方法来地绘制形式多样的自定义符号。并对GIS中符合绘制技术的发展前景进行了展望。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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GNSS系统及其技术的发展研究 总被引:3,自引:1,他引:2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引:13,自引:0,他引:13
介绍“4D”(即数字地面模型、数字正射影像、数字栅格地图和数字线划地图)系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献