铅垂平面飞行弹道仿真 名字为trajectory的是主程序。interp是一维、二维的插值程序，rk是龙格库它函数，grk2f是方程组的右端函数 -vertical plane flight trajectory simulation to name the trajectory of the main program. Interp is one-dimensional, two-dimensional interpolation procedures rk is Runge for it

反距离加权插值(IDW)，Gis二维等值线网格化中常用的,采用java语言实现，内有实例，测试代码，很实用的-Inverse distance weighted interpolation (IDW), Gis-dimensional contour grid commonly used, using java language, there are examples, test code, very useful