【摘要】 为解决以GeoMedia为平台进行GIS二次开发中遇到的空间插值问题,本文利用空间数据库和COM技术,通过应用程序开发实现了以GeoMedia组件为核心,以inverse distance weighting(IDW)反距离加权插值算法为基础的空间插值运算程序,同时实现了在GeoMedia开发平台下由矢量数据到栅格数据的转换.在“河北省地下水位空间分布系统”中的运用结果表明该程序是可靠的.更多还原

【Abstract】 An interpolation routine solving the spatial interpolation problem is introduced when carrying out a further development of GIS in GeoMedia environment.It is based on the inverse distance weighting(IDW) method and COM technology.The program is developed on the basis of GeoMedia component objects and spatial database to archieve the spatial interpolation operation in GeoMedia environment.The system made the conversion of vector to raster at the same time.The application result indicates that the programme is reliable in the Spatial Distribute System of Groundwater Level in Hebei Province.更多还原