本程序是用C编写的数字地图制图实习的源程序，主要实现四个功能：绘制晕线，晕线填充，绘制土堤以及绘制点状符号-this process is the preparation of the C Digital Cartography internship program, the four main functions : Drawing halo lines, Halo filled with earth berms and the mapping of drawing point symbols

GIS专业数字地图制图课程成果 实现点状符号、现状符号、面状符号的绘制-results of digital mapping lesson of GIS speciality which can draw point ，polyline and polygon