空间信息栅格中的不同数据格式转换研究

Study on Exchange of Different Data Format in Spatial Information Grid

空间信息存在数据量大、处理复杂、难以共享等问题。空间信息栅格(SIG)的一个主要任务就是实现一体化、智能化的空间信息获取、存储、组织、分发、融合及互操作,形成空间信息资源共享与集成。通过比较目前主要的几种空间数据格式,在分析了数据转换的主要方法后,提出以M IF文件格式为中间桥梁的思想,通过两两不同的空间数据的相互转换,实现了多种空间数据之间的转换,有效地解决了不同空间数据的共享问题。

There are many problems in spatial information due to its excessive voluminousness, complexity of processing and difficulty in sharing. A main task of Spatial Information Grid （SIG）is to acquire store, organize, distribute, analyze, aggregate, and apply spatial information, establish a unified and intelligent platform. After analyzed some main spatial data formats in the market , this article put forward an idea of bridge based on MIF file of MapInfo Company. By this bridge, we can realize the change between two different spatial data format, such as ESRI＇s Shapefile , AutoCAD＇s DWG file. As a result, it is an effective method for changing different spatial data format, which also gives us an impact way to solve the problem of sharing the spatial data.