我有两组数据显示为图形中的线条。如何在它们之间填充颜色区域?
import matplotlib.pyplot as plt
curve1, = plt.plot(xdata, ydata)
curve2, = plt.plot(xdata, ydata)
我试过了:
x = np.arange(0,12,0.01)
plt.fill_between(x, curve1, curve2, color='yellow')
谢谢
最佳答案
您必须将ydata
用作fill_between
的参数,而不是曲线。
直接使用ydata
,或从curve1/2
对象(例如ydata=curve1.get_ydata()
)获得它们。
这是根据docs改编而成的示例:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(-5, 5, 0.01)
y1 = -5*x*x + x + 10
y2 = 5*x*x + x
c1, = plt.plot(x, y1, color='black')
c2, = plt.plot(x, y2, color='black')
# If you want/have to get the data form the plots
# x = c1.get_xdata()
# y1 = c1.get_ydata()
# y2 = c2.get_ydata()
plt.fill_between(x, y1, y2, where=y2 >y1, facecolor='yellow', alpha=0.5)
plt.fill_between(x, y1, y2, where=y2 <=y1, facecolor='red', alpha=0.5)
plt.title('Fill Between')
plt.show()
最后,您将获得: