空间数据交换标准是国家空间数据基础设施的一个重要组成部分,也是目前实现空间数据共享的一个必要手段.文中在分析OGC制定的基于XM L的地理空间数据编码标准的执行规范GM L 3.1和我国地球空间数据交换格式的基础上,定义了顾及中国地球...空间数据交换标准是国家空间数据基础设施的一个重要组成部分,也是目前实现空间数据共享的一个必要手段.文中在分析OGC制定的基于XM L的地理空间数据编码标准的执行规范GM L 3.1和我国地球空间数据交换格式的基础上,定义了顾及中国地球空间数据交换格式的GM L 3.1模式——CGM L,给出了CGM L的框架,对其各个模式进行了论述,并设计了一个基于CGM L的应用模式.展开更多
Geo-Spatial Data Transfer Standard is an important part of 'National Spatial Data Infrastructure(NSDI)' ,as well as a necessary means for data sharing. 'Chinese National Geo-Spatial Data Transfer Format (C...Geo-Spatial Data Transfer Standard is an important part of 'National Spatial Data Infrastructure(NSDI)' ,as well as a necessary means for data sharing. 'Chinese National Geo-Spatial Data Transfer Format (CNSDTF)' was approved by National Quality Technology Supervise Bureau in 1999 with the standard serial number of 17798-1999. It is designed to support vector and raster spatial data. This paper describes the vector part of CNSDTF, including design ideas, main characters, conceptual model, definition of spatial object, and file structure.展开更多
文摘空间数据交换标准是国家空间数据基础设施的一个重要组成部分,也是目前实现空间数据共享的一个必要手段.文中在分析OGC制定的基于XM L的地理空间数据编码标准的执行规范GM L 3.1和我国地球空间数据交换格式的基础上,定义了顾及中国地球空间数据交换格式的GM L 3.1模式——CGM L,给出了CGM L的框架,对其各个模式进行了论述,并设计了一个基于CGM L的应用模式.
基金Project supported by the National Outstanding Youth Researchers Foundation(No.49525101)
文摘Geo-Spatial Data Transfer Standard is an important part of 'National Spatial Data Infrastructure(NSDI)' ,as well as a necessary means for data sharing. 'Chinese National Geo-Spatial Data Transfer Format (CNSDTF)' was approved by National Quality Technology Supervise Bureau in 1999 with the standard serial number of 17798-1999. It is designed to support vector and raster spatial data. This paper describes the vector part of CNSDTF, including design ideas, main characters, conceptual model, definition of spatial object, and file structure.
