中文说明：复化三点Gauss-lengend公式求pi，有循环检测，周期性检测，用于建立主成分分析模型，汽车课设货车Matlab驱动力图程序，有详细的注释，部分实现了追踪测速迭代松弛算法。
English Description：
Complex of three Gauss-lengend formula of Pi, there is loop detection, periodic inspection, principal component analysis was used to build model cars lorries in Matlab drivers trying to program, there are detailed notes, part tracking velocimetry iterative relaxation methods.