该函数用来计算时间序列的最大Lyapunov 指数 Wolf 方法

m: 嵌入维数

tau:时间延迟

data:时间序列

N:时间序列长度

P:时间序列的平均周期,选择演化相点距当前点的位置差，即若当前相点为I，则演化相点只能在|I－J|>P的相点中搜寻

lambda_1:返回最大lyapunov指数值 -

　This function is used to calculate the time series of the largest Lyapunov exponent method Wolf

　M: embedding dimension

　Tau: Time Delay

　Data: time series

　N: length of time series

　P: the average period of time series, selecting relative pitch evolution current dot position difference, i.e., if the current phase point is I, and the evolution of the phase points only | Search> P phase points | I-J

　Lambda_1: Returns the maximum index value lyapunov