6种国家基本比例尺地形图新、旧图幅号的直接换算方法

Direct Conversion Methods between the New and Old Sheet Numbers of Six National Primary Scale Topographic Maps

在解决1∶1万地形图新、旧图幅号的手工换算方法基础上,研究了我国其余6种国家基本比例尺(1∶50万～1∶5 000)地形图直接利用其图幅号进行新、旧图幅号间的相互换算问题,给出各比例尺地形图新、旧图幅号间直接换算的方法与关系式,并用实例进行了验算。

On the basis of solving manual conversion methods between the new and old sheet numbers of 1：10000 topographic maps, this paper studies and describes the mutual conversion problems between the new and old sheet numbers of directly using their sheet numbers of other six national primary scale （1： 500000 -1： 5000） topographic maps in China, given the direct conversion methods and relation- ship formulae between the new and old sheet numbers of each scale topographic map, and with instance checking.