Study on Exchange of Different Data Format in Spatial Information Grid
空间信息栅格中的不同数据格式转换研究

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.