凸包最常用的凸包算法是Graham扫描法和Jarvis步进法.本程序用Graham扫描法实现凸包的绘制-convex hull of the most commonly used convex hull algorithm is scanning and Graham Jarvis stepping law. The procedures used G raham scanning method to achieve the convex hull mapping

实现GPS定位的常用算法，包括路径计算，模式匹配等