从平射方位投影推探地图投影的变形规律

Approaching the Deformed Law of Map Projection from Flat Fire Projection

地图投影是地图学的数学基础。地图投影的变形规律是判断和选择投影的关键。通过对方位投影的变形分析 ,推导出圆柱、圆锥等一般地图投影的变形规律 。

Map projection is the basis of cartography.The deformed law of map projection is the key of deciding and choosing projection.By analysing on bearings,we can get the deformed law of cylinder and taper and try a new method in cartography.