Python的 figure參數和 subplot子圖繪制

1. Python的figure參數主要有：

def figure(num=None,  # autoincrement if None, else integer from 1-N
           figsize=None,  # defaults to rc figure.figsize
           dpi=None,  # defaults to rc figure.dpi
           facecolor=None,  # defaults to rc figure.facecolor
           edgecolor=None,  # defaults to rc figure.edgecolor
           frameon=True,
           FigureClass=Figure,
           clear=False,
           **kwargs
           ):

可以設置圖片大小、分辨率、顏色等。

2. subplot子圖繪制，子圖的繪圖參數可以分別設置

plt.figure(1)

x1 = np.linspace(-0.2, 2, 10)
y1 = x1**2 + 0.3
plt.subplot(121)
plt.scatter(x1, y1)
plt.xlabel('X')
plt.ylabel('Y')
plt.title('test_1')

x2 = np.linspace(-0.2, 2, 10)
y2 = x2 + 0.3
plt.subplot(122)
plt.plot(x2, y2, color="red", linewidth=1.0, marker = 's', linestyle="--")
## plt.plot(x, y, color="#ef5492", linewidth=2.0, marker = 's', linestyle="--")
# plt.plot(x2, y2, 'rs--')
         
plt.xlabel('X')
plt.ylabel('Y')
plt.title('test_2')
plt.show()

3. 在同一張圖片上顯示多種圖形，簡單說把 plt.show()放在最后即可

import matplotlib.pyplot as plt
import numpy as np
plt.figure(2)

x1 = np.linspace(-0.2, 2, 10)
y1 = x1**2 + 0.3
plt.scatter(x1, y1)


x2 = np.linspace(-0.2, 2, 10)
y2 = x2 + 0.3
plt.plot(x2, y2, color="red", linewidth=1.0, marker = 's', linestyle="--")
## plt.plot(x, y, color="#ef5492", linewidth=2.0, marker = 's', linestyle="--")
# plt.plot(x2, y2, 'rs--')
         
plt.xlabel('X')
plt.ylabel('Y')
plt.title('test_3')
plt.show()

更多參數設置可見：

https://www.cnblogs.com/qi-yuan-008/p/12588351.html

https://www.cnblogs.com/qi-yuan-008/p/12588121.html

 

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參考：

https://blog.csdn.net/helunqu2017/article/details/78662877