python 绘制填充

python 绘制填充

""" 绘图 填充交叉区域 """ import numpy as np import matplotlib.pyplot as mp # 1.准备数据 x = np.linspace(0, 8*np.pi, 1000) sin_x = np.sin(x) cos_x = np.cos(x/2) / 2 # 2.创建窗口 mp.figure("Fill", facecolor="lightgray", figsize=(10, 6)) mp.title("Fill", fontsize=20) # 3.X刻度 x_ticks = np.linspace(0, 8*np.pi, 9) x_ticks_label = [0, r"$\pi$", r"$2\pi$", r"$3\pi$", r"$4\pi$", r"$5\pi$", r"$6\pi$", r"$7\pi$", r"$8\pi$"] mp.xticks(x_ticks, x_ticks_label) aix = mp.gca() aix.xaxis.set_minor_locator(mp.MultipleLocator(np.pi/2)) mp.grid(linestyle=":") # 4.绘制曲线 mp.plot(x, sin_x, c="b", label=r"$y=sin(x)$") mp.plot(x, cos_x, c="r", label=r"$y=\frac{cos(\frac{x}{2})}{2}$") # 5.绘制填充 mp.fill_between(x, sin_x, cos_x, sin_x > cos_x, color="dodgerblue", alpha=0.3) mp.fill_between(x, sin_x, cos_x, sin_x < cos_x, color="orangered", alpha=0.3) mp.legend() mp.show()