使用matplotlib.pyplot.clabel添加具有透明背景的标签

import matplotlib.pyplot as plt

# 假设已经有一个等高线图对象fig
fig = plt.figure()
ax = fig.add_subplot(111)
contour = ax.contour(X, Y, Z)  # X, Y, Z分别为等高线图的横坐标、纵坐标和高度值

labels = plt.clabel(contour, inline=True, fontsize=8, colors='black', alpha=0.5)

for label in labels:
    label.set_bbox(dict(facecolor='white', edgecolor='none', alpha=0.5))

import matplotlib.pyplot as plt

# 创建等高线图
fig = plt.figure()
ax = fig.add_subplot(111)
contour = ax.contour(X, Y, Z)

# 添加标签
labels = plt.clabel(contour, inline=True, fontsize=8, colors='black', alpha=0.5)

# 设置标签的背景透明度
for label in labels:
    label.set_bbox(dict(facecolor='white', edgecolor='none', alpha=0.5))

plt.show()