向matplotlib图添加和删除地块

import matplotlib.pyplot as plt
import matplotlib.patches as patches

fig, ax = plt.subplots()

ax.plot(x, y)  # 绘制原始图形

rect = patches.Rectangle((x1, y1), width, height, facecolor='green', alpha=0.5)
ax.add_patch(rect)

rect.remove()

import matplotlib.pyplot as plt
import matplotlib.patches as patches

# 创建图形对象和子图对象
fig, ax = plt.subplots()

# 绘制原始图形
ax.plot(x, y)

# 添加地块
rect = patches.Rectangle((x1, y1), width, height, facecolor='green', alpha=0.5)
ax.add_patch(rect)

# 删除地块
rect.remove()

# 显示图形
plt.show()