Geodesic Spatial Operator Algorithms and Tests

Two implementations (in Java and PlpgSQL for PostGIS) to obtain the intersection of two geodesic lines and the minimun distance from a point to a geodesic line with a high accuracy (better than 100nm), supporting long distances (greater than 180 degrees).<br>SRC Folder: Java and PlpgSQL implementationsTEST Folder: Oracle, Google Earth, ArcGIS, PostGIS tests.<br>README.pdf: Brief introducction.<br>本数据集提供两种实现方案，分别基于适配PostGIS的Java语言与PL/pgSQL语言，可高精度（精度优于100nm）求解两条测地线（geodesic line）的交点，并可计算点到测地线的最小距离，同时支持大于180度的长距离运算。<br>SRC文件夹：存放Java与PL/pgSQL实现代码<br>TEST文件夹：包含Oracle、Google Earth、ArcGIS、PostGIS相关测试用例<br>README.pdf：项目简要介绍。