通常在为一个政区或自然区制图时,传统法只调查该区界内的类型和面积。因此,当用卫星或其它遥感磁带数据制专业图时,也应准确配置区界,才能取用分类时打印出的各面积数;同时要求分类图的点位精度高,才能与地形图套合,供生产部门使用。在国内外常见的是矩形分类图。近年来也有用机器硬件(如光笔、跟踪球或数字化桌)来近似标出区界;而为了与地形图套合,尚需花大量机时和 When mapping a political or natural area, the traditional law only investigates the type and size of the area. Therefore, when using satellites or other remote sensing tape data to make a professional map, the area boundary should also be accurately configured so as to obtain the areas printed in the classification; meanwhile, the precision of point classification of the classification map is required to suit the topographic map For use by the production department. Common at home and abroad is a rectangular classification map. In recent years, there is also the use of machine hardware (such as light pen, trackball or digital table) to approximate the boundaries; and in order to map with the topography, still need to spend a lot of time and