[Retracted] Analysis of Inducing Factors of Chronic Pulmonary Heart Disease Caused by Chronic Obstructive Pulmonary Disease at High Altitude through Epidemiological Investigation under Intelligent Medicine and Big Data

Figure 7

The results of different algorithms to locate QRS waves, (a) Quadratic spline wavelet, (b) Morlet wavelet, and (c) Symlet wavelet.

(a)

(b)

(c)