基于ArcEngine二次开发的地图数据处理程序，实现了地图显示，绘图，缓冲区分析，坡度、坡向、山体阴影等功能。适合初学者。-ArcEngine secondary development of map-based data processing procedures, to achieve the map display, drawing, buffer analysis, slope, aspect, hillshade functions. Suitable for beginners.