海图线状要素之间最短距离的解算方法

Calculation of the Shortest Distance Between Linear Elements on the Chart

线状要素是海图上大量存在的最基本的制图要素,求解两线状要素间的最短距离一直是海上航行的重要研究内容,且在其他方面也有重要应用。讨论了"不作离散转换的两线要素间距离的求解"、"一线要素转换成离散点的两线要素间距离的求解"和"缓冲区分析法"等几种基于矢量数据的求解方法。

Linear feature is one of the most essential elements on chart,it has been found that figuring out the shortest distance between two linear features is always one of the most important contents in marine navigation,which is of great usage in other aspects at the same time.Some kinds of algorithms based on vector data was brought forward,such as calculating the distance between two linear features without discrete transformation,calculating the distance between two linear features with one element transformed to discrete points and analytical method based on buffer.