『Python』matplotlib坐标轴应用

1. 设置坐标轴的位置和展示形式

import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl

mpl.use('Qt5Agg')
mpl.rcParams['font.sans-serif'] = ['SimHei']
mpl.rcParams['font.serif'] = ['SimHei']
mpl.rcParams['axes.unicode_minus'] = False  # 解决保存图像是负号'-'显示为方块的问题,或者转换负号为字符串

plt.axes([0.05, 0.7, 0.3, 0.3], frameon=True, facecolor="y", aspect="equal")
plt.plot(np.arange(3), [0, 1, 0], color="blue", linewidth=2, linestyle="--")
plt.ylim(0, 1.5)
plt.axis("image")

plt.axes([0.3, 0.4, 0.3, 0.3], frameon=True, facecolor="y", aspect="equal")
plt.plot(2 + np.arange(3), [0, 1, 0], color="blue", linewidth=2, linestyle="-")
plt.ylim(0, 15)
plt.axis([2.1, 3.9, 0.5, 1.9])

plt.axes([0.55, 0.1, 0.3, 0.3], frameon=True, facecolor="y", aspect="equal")
plt.plot(4 + np.arange(3), [0, 1, 0], color="blue", linewidth=2, linestyle=":")
plt.ylim(0, 1.5)
plt.axis("off")

plt.show()
import numpy as np
import mat