1 import numpy as np 2 import matplotlib.pyplot as plt 3 4 x = np.linspace(0, 5 * np.pi, 1000) 5 6 y1 = np.sin(x) 7 y2 = np.sin(2 * x) 8 9 plt.plot(x, y1, label = "$ y = sin(x) $") 10 plt.plot(x, y2, label = "$ y = sin(2 * x) $") 11 plt.legend(loc = 3) 12 13 plt.show()
对函数与坐标轴之间的区域进行填充，使用fill函数
1 import numpy as np 2 import matplotlib.pyplot as plt 3 4 x = np.linspace(0, 5 * np.pi, 1000) 5 6 y1 = np.sin(x) 7 y2 = np.sin(2 * x) 8 9 plt.fill(x, y1, color = "g", alpha = 0.3) 10 plt.fill(x, y2, color = "b", alpha = 0.3) 11 12 plt.show()
填充两个函数之间的区域用fill_between
1 import numpy as np 2 import matplotlib.pyplot as plt 3 4 x = np.linspace(0, 5 * np.pi, 1000) 5 6 y1 = np.sin(x) 7 y2 = np.sin(2 * x) 8 9 plt.plot(x, y1, c = "g") 10 plt.plot(x, y2, c = 'r') 11 12 # fill_between 填充两个函数之间的区域 13 # 两个函数之间的区域用黄色填充 14 plt.fill_between(x, y1, y2, facecolor = "yellow") 15 16 plt.show()