两种高效率的地图存贮方法彭小元（武汉测绘科技大学国土信息与地图科学系）地图是以特有的符号，运用某些数学规则将地球上各种自然及社会经济现象缩小表示在平面上的图形。地图具有准确性和直观性，其应用非常广泛。地图既可以全面地反映某一区域的地理信息，也可以仅反... Two Efficient Map Storage Methods Peng Xiaoyuan (Department of Land Information and Mapping Science, Wuhan University of Surveying and Mapping) The map is based on a unique symbol and uses certain mathematical rules to reduce various natural and social-economic phenomena on the Earth Graphics. Map with accuracy and intuitive, its application is very extensive. Maps can not only reflect the geographical information of a region, but also can only ...