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AutoCAD图形文件到MAPGIS数据文件的转换工具的开发与实现 总被引:1,自引:0,他引:1
为了实现AutoCAD图形数据在MAPG IS系统中的共享,本文分析了这两种软件系统所支持的文件格式,并在此基础上,详细介绍了在AutoCAD Ob jectARX、MAPG IS和V isual C++环境下开发和实现“AutoCAD图形文件到MAPG IS数据文件的转换工具”的基本原理和关键技术,利用该工具可以将格式为DWG的AutoCAD图形文件直接转换为MAPG IS点(*.WT)、线(*.WL)数据文件。 相似文献
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基于AutoCAD人机交互成图方式是目前地下管线探测数据处理的常用方法,而如何将以扩展属性存储复杂管线信息的CAD格式管线数据无损转换为GIS格式,并适应各种不同要求的数据标准以录入管线信息管理系统,是业内经常遇到的难题。本文基于FME软件的语义转换技术,结合实例研究将CAD格式地下管线数据无损转换为Shapefile文件的过程及要点,转换成果符合入库标准。语义转换技术使得转换过程更加灵活、高效。 相似文献
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GIS空间数据转换为DXF格式的方法研究 总被引:1,自引:0,他引:1
G IS空间数据具有多源性的特征,为数据综合利用和数据共享带来不便,解决多格式数据源集成一直是近年来G IS应用系统开发中需要解决的重要问题[5]。DXF格式作为一种空间数据转换的事实上的标准,对于G IS软件来说,实现两者的数据转换具有重要意义。本文分析了G IS空间数据与AutoCAD数据模型的组织特征,在比较分析的基础上设计了转换方案,并就实现过程中的关键技术进行了论述。 相似文献
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季惠丽 《测绘与空间地理信息》2014,(3):114-115,118
目前大多数现有的地形图都是基于CAD格式绘制、存储的,但是CAD格式在数据分析、管理和处理上受到限制,需要转换成GIS格式。本文对地形图从AutoCAD(.dwg)数据格式转换为MapInfo(mid/mif)GIS数据,从图层组织、数据要素管理和背景图形方面对各种方法进行了分析研究。 相似文献
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针对目前集体土地使用权数据库建设工作的主要生产环节,包括图形数据检查、属性数据录入、SHP格式导出等工序,基于AutoCAD平台,采用C++语言进行二次开发,解决传统GIS环境下才能完成的数据建库工作,实现对DWG图形数据的检查转换,使用权宗地、界址点、界址线等要素属性值的自动提取、批量赋值和修改等功能,最终导出符合数据库要求的"苍穹标准SHP文件"。方便内业生产,提高了工作效率。 相似文献
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采用通用数据转换平台(FME)进行dgn—dwg数据转换的探讨 总被引:1,自引:0,他引:1
本介绍采用通用数据转换平台FME将MicroStafion的dgn数据格式转换到AutoCAD下的dwg数据格式的方法,并就dgn数据到AutoCAD的转换作一些探讨。 相似文献
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数据转换是实现GIS(Geographic information system)数据间互操作的重要手段之一。详细阐述目前实现数据转换的几种方法及存在问题,并以AutoCAD dwg数据格式为例,介绍如何利用FME(FeatrueManipulate Engine)语义转换实现AutoCAD dwg数据向GIS shape数据格式转换,并利用脚本程序进行批量处理,这在很大程度上提高了地籍数据入库的效率。 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