求信号的斜率，在一个周期内求的，在matlab中实现的，是提取特征时用到的。-Seek the slope of the signal, in a demand cycle, in matlab to implement, is used when extracting features. The body s signals.

What for Linear regression is used? We can predict one variable from another Y = a+ bX b = slope a = intercept (constant ) Correlation Coefficient (r) : A measure of association between two variables. -What for Linear regression is used

Usefull textbook of the software STB 2006, wich help you to calculate slope stability.

document of slope stability, in word.