Python uses add_subplot and subplot to draw subplots

This article mainly introduces the operation of Python using add_subplot and subplot to draw subplots, and involves the related operating skills of Python using the matplotlib module for graphics drawing. Friends in need can refer to it

The examples in this article describe the use of Python add_subplot and subplot draw subplot operations. Share it with everyone for your reference, the details are as follows:

Sub-pictures: is to generate multiple sub-pictures in one figure.

Introduction to Matplotlib objects

FigureCanvas Canvas
Figure Figure
Axes Coordinate axis (where the actual drawing is done)

Note that the plt.subplot() parameters in the pyplot method are the same as the add_subplot() parameters and meanings in the object-oriented method.

Use object-oriented approach

#!/usr/bin/python
#coding: utf-8
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(0, 100)
fig = plt.figure()
ax1 = fig.add_subplot(221)
ax1.plot(x, x)
ax2 = fig.add_subplot(222)
ax2.plot(x, -x)
ax3 = fig.add_subplot(223)
ax3.plot(x, x ** 2)
ax4 = fig.add_subplot(224)
ax4.plot(x, np.log(x))
plt.show()

pyplot approach

#!/usr/bin/python
#coding: utf-8
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(0, 100)
plt.subplot(221)
plt.plot(x, x)
plt.subplot(222)
plt.plot(x, -x)
plt.subplot(223)
plt.plot(x, x ** 2)
plt.subplot(224)
plt.plot(x, np.log(x))
plt.show()

Running results:

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