从ArcGIS平面栅格图形到Gocad三维图像转换的开发探讨

介绍了ArcGIS和Gocad在处理平面栅格图形上存在的不足，然后提出了解决的方法及其实现流程，通过具体实例成功地完成了平面栅格图形到空间曲面的转化。其方法是：首先利用ArcObjects的接口对ArcGIS进行了二次开发将栅格图形转化成空间坐标数据，然后对Gocad进行二次开发，其目的是将空间坐标数据直接产生出Gocad能够直接识别的空间曲面对象文件，再加载到Gocad中以三维图形显示出来，最后将这些功能组装起来成为一个完整的系统。

THE DEVELOPMENT AND STUDY OF RASTER MAP FROM ARCGISTO 3D SPECIAL SURFACE OF GOCAD

Firstly, the lacks of ArcGIS and Gocad on dealing with Raster map are introduced in this paper, and then a set of workflow is designed to resolve these problems. The program listed below in this paper is carried out, and it can make a transformation from the raster map of ArcGIS to three-dimension map. The workflow is that: for one thing, using the interfaces of ArcObjects to finish the secondary develop of ArcGIS, having the raster map transformed to spacial data file which includes the spacial coordinate of raster map; for another thing, the spacial data file has been transformed to the spacial surface object file of Gocad by secondary development of Gocad. The Gocad can directly load this object file and show it in three-dimensional way. At last, all of these functions displayed in the workflow have been made of an intact system.