import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
def sinplot():
x = np.linspace(0, 14, 100)
# 设置画布大点
plt.figure(figsize=(8,6))
for i in range(4):
plt.plot(x, np.sin(x+i) * (i+0.75), label='sin(x+%s)*(%s+0.75)'% (i,i))
plt.legend()
sinplot()
