基于FME的CAD与GIS数据共享研究
发布时间：2018-07-21 17:39
【摘要】： CAD格式数据和GIS格式数据共享的问题,一直是GIS技术发展中核心的问题之一。CAD软件和GIS软件的数据模型之间存在极大的差异,导致了它们对同一地理实体的描述方式不一致,这是两种格式数据难以共享的主要原因。在我国,各行业各部门的专业需求不同,制定的数据共享标准不同,这在客观上增加了数据共享的难度。此外,传统的数据共享实现技术,没有考虑对语义的处理,或者不能保证在转换过程中所有信息的正确性,也成为CAD与GIS数据共享中存在的问题。综上所述,这些原因造成了相关行业部门中CAD数据和GIS数据不能共享,或者说不能及时共享,使行业之间,甚至在行业内部形成信息孤岛,极大的浪费了宝贵的数据资源。 本文从典型的CAD软件AutoCAD和GIS软件ArcGIS的研究入手,从数据结构、数据组织、拓扑关系存储、地图符号表达以及坐标系统五个角度去分析数据模型的特征,剖析了实现CAD与GIS数据共享的几种传统技术方法上的问题,提出了利用FME的语义转换技术解决共享问题的思路。本文以基础地理信息数据为例,在CAD格式数据与GIS格式数据之间构建映射关系表,并基于这个关系表在FME Suite的平台上实现了CAD与GIS的基础数据的共享。通过以上理论研究和实例验证,本文得出以下结论:数据模型的差异,是CAD和GIS的数据共享在技术上存在的主要障碍,因此首先要充分了解两种软件的数据模型,进而建立模型间的映射关系;数据组织、标准的混乱,是在应用中产生的问题,需要各部门间建立统一的数据标准,并通过质量检查控制的手段,保证标准的执行;基于FME平台实现GIS和CAD的数据转换,是解决CAD和GIS数据共享课题的行之有效的方法之一。 本文所做的研究,有助于多年积累下来的数据资源的充分利用,有助于数据的及时更新,有助于促进CAD与GIS共享技术的发展。最后,本文对今后的研究提出了展望。
[Abstract]:The sharing of CAD format data and GIS format data has always been one of the core problems in the development of GIS technology. There are great differences between CAD software and GIS software data model, which lead to different description of the same geographic entity. This is the two formats of data difficult to share the main reason. In our country, the professional needs of different sectors are different, and the standards of data sharing are different, which increases the difficulty of data sharing objectively. In addition, the traditional data sharing technology does not consider the processing of semantics, or can not guarantee the correctness of all information in the conversion process, which is also a problem in data sharing between CAD and GIS. To sum up, these reasons cause CAD data and GIS data can not be shared in the relevant industry departments, or can not be shared in time, so that industries, even within the industry to form information island, a great waste of valuable data resources. This paper starts with the research of typical CAD software AutoCAD and GIS software ArcGIS, analyzes the characteristics of the data model from five aspects: data structure, data organization, topological relation storage, map symbol representation and coordinate system. This paper analyzes the problems in several traditional techniques and methods of realizing data sharing between CAD and GIS, and puts forward a way to solve the problem of sharing by using the semantic conversion technology of FME. This paper takes the basic geographic information data as an example, constructs the mapping relation table between CAD format data and GIS format data, and realizes the sharing of CAD and GIS basic data on the platform of FME Suite. Based on the above theoretical research and practical examples, this paper draws the following conclusions: the difference of data model is the main technical obstacle of data sharing between CAD and GIS. Therefore, we should first fully understand the data models of the two kinds of software. The confusion of data organization and standard is the problem in application, which requires the establishment of uniform data standard among different departments, and the implementation of the standard is ensured by means of quality inspection and control. The data conversion between GIS and CAD based on FME platform is one of the effective methods to solve the problem of data sharing between CAD and GIS. The research done in this paper is helpful to make full use of the data resources accumulated for many years, to update the data in time and to promote the development of the sharing technology between CAD and GIS. Finally, this paper puts forward the prospect of the future research.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：P208
本文编号：2136285
[Abstract]:The sharing of CAD format data and GIS format data has always been one of the core problems in the development of GIS technology. There are great differences between CAD software and GIS software data model, which lead to different description of the same geographic entity. This is the two formats of data difficult to share the main reason. In our country, the professional needs of different sectors are different, and the standards of data sharing are different, which increases the difficulty of data sharing objectively. In addition, the traditional data sharing technology does not consider the processing of semantics, or can not guarantee the correctness of all information in the conversion process, which is also a problem in data sharing between CAD and GIS. To sum up, these reasons cause CAD data and GIS data can not be shared in the relevant industry departments, or can not be shared in time, so that industries, even within the industry to form information island, a great waste of valuable data resources. This paper starts with the research of typical CAD software AutoCAD and GIS software ArcGIS, analyzes the characteristics of the data model from five aspects: data structure, data organization, topological relation storage, map symbol representation and coordinate system. This paper analyzes the problems in several traditional techniques and methods of realizing data sharing between CAD and GIS, and puts forward a way to solve the problem of sharing by using the semantic conversion technology of FME. This paper takes the basic geographic information data as an example, constructs the mapping relation table between CAD format data and GIS format data, and realizes the sharing of CAD and GIS basic data on the platform of FME Suite. Based on the above theoretical research and practical examples, this paper draws the following conclusions: the difference of data model is the main technical obstacle of data sharing between CAD and GIS. Therefore, we should first fully understand the data models of the two kinds of software. The confusion of data organization and standard is the problem in application, which requires the establishment of uniform data standard among different departments, and the implementation of the standard is ensured by means of quality inspection and control. The data conversion between GIS and CAD based on FME platform is one of the effective methods to solve the problem of data sharing between CAD and GIS. The research done in this paper is helpful to make full use of the data resources accumulated for many years, to update the data in time and to promote the development of the sharing technology between CAD and GIS. Finally, this paper puts forward the prospect of the future research.
【学位授予单位】：南京师范大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：P208
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