DLL 地理信息系统，坐标变换，内含注册机。-GeoDLL is a dynamic link library of functions for datum and coordinate transformations between coordinates and reference systems, distance calculations, and geodetic functions that can be call

XyzWin is a PC Windows program for converting NAD83 Latitude and Longitude to earth centered XYZ values on the GRS80 ellipsoid and vice versa. -XyzWin is a PC Windows program for converting NAD83 Latitude and Longit