x、y不相关,只是连接呈曲线,想要曲线向左填充的话,怎么弄啊?
或者z=-x,让镜像的曲线中间有填充?
data = pd.read_csv('test4.csv')
x = np.array(data['id'])
y = np.array(data['q'])
z = np.array(-data['q'])
plt.plot(x,y)
plt.plot(x,z)/201904/26/1556267295_134808.png)
plt.xlabel('x')
plt.ylabel('y')
plt.fill_between(x,y,where=(y<0.15),facecolor='yellow')