删除 Matplotlib 中的图例边框
在本文中,我们将学习如何在 Matplotlib 中移除图例边框。让我们讨论一些概念:
- 图例是描述图形元素的区域。在 matplotlib 库中,有一个名为 legend() 的函数,用于在轴上放置图例。
方法:
- 导入库 (Matplotlib)
- 导入/创建数据。
- 绘制图表。
- 添加图例。
- 删除图例边框。
示例:这是一个带有图例的示例。
Python3
# importing packages
import numpy as np
import matplotlib.pyplot as plt
# create data
x = np.linspace(1, 10, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
# plot graph
plt.plot(x, y1)
plt.plot(x, y2)
# add legend
plt.legend(['Sine wave', 'Cos wave'])
plt.show()
Python3
# importing packages
import numpy as np
import matplotlib.pyplot as plt
# create data
x = np.linspace(1, 10, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
# plot graph
plt.plot(x, y1)
plt.plot(x, y2)
# add legend and remove frame
plt.legend(['Sine wave', 'Cos wave'], frameon=False)
plt.show()
Python3
# importing packages
import numpy as np
import matplotlib.pyplot as plt
# create data
x = np.linspace(1, 10, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
# plot graph
plt.plot(x, y1)
plt.plot(x, y2)
# add legend
leg = plt.legend(['Sine wave', 'Cos wave'])
# set opacity equal to zero i.e; transparent
leg.get_frame().set_alpha(0)
plt.show()
输出:
方法一:(使用frameon = False)
蟒蛇3
# importing packages
import numpy as np
import matplotlib.pyplot as plt
# create data
x = np.linspace(1, 10, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
# plot graph
plt.plot(x, y1)
plt.plot(x, y2)
# add legend and remove frame
plt.legend(['Sine wave', 'Cos wave'], frameon=False)
plt.show()
输出 :
方法二:(使用legend.get_frame().set_alpha(0))
蟒蛇3
# importing packages
import numpy as np
import matplotlib.pyplot as plt
# create data
x = np.linspace(1, 10, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
# plot graph
plt.plot(x, y1)
plt.plot(x, y2)
# add legend
leg = plt.legend(['Sine wave', 'Cos wave'])
# set opacity equal to zero i.e; transparent
leg.get_frame().set_alpha(0)
plt.show()
输出 :