我在极坐标图中绘制了一个圆和两条直线,我想在它们之间填充(四分之一圆)。但是我不知道如何。
import numpy as np
from matplotlib import pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, polar = True)
theta1 = np.linspace(0, 2*np.pi, 100)
r1 = theta*0 + 1
ax.plot(theta1, r1, color='b')
theta2 = np.array([np.pi/2]*100)
r2 = np.linspace(0, 1, 100)
ax.plot(theta2, r2, color='b')
theta3 = np.array([0]*100)
r3 = np.linspace(0, 1, 100)
ax.plot(theta3, r3, color='b')
plt.show()
答案 0 :(得分:1)
您需要稍微修改代码以包含要绘制的区域,n使用fill_between
方法。在第一象限的特定情况下,我们必须在0-90
度和0-1
半径之间填充。代码:
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, polar=True)
theta1 = np.linspace(0, 2 * np.pi, 100)
r1 = theta1 * 0 + 1
ax.plot(theta1, r1, color='b')
theta2 = np.array([np.pi / 2] * 100)
r2 = np.linspace(0, 1, 100)
ax.plot(theta2, r2, color='b')
theta3 = np.array([0] * 100)
r3 = np.linspace(0, 1, 100)
ax.plot(theta3, r3, color='b')
theta4 = np.linspace(0, np.pi / 2, 100)
ax.fill_between(theta4, 0, 1)
plt.show()