Python绘图实现坐标轴共享与复用详解

import numpy as np
import matplotlib.pyplot as plt

x = np.arange(10)
y = 2**x
dy = np.diff(y)
sinx = np.sin(x)

fig, ax = plt.subplots()

p1 = ax.bar(x, y, color='blue')
ax.set(xlabel="x", ylabel="y")
ax.yaxis.label.set_color('blue')
ax.tick_params(axis='y', colors="blue")

ax2 = ax.twinx()
p2, = ax2.plot(x[1:], dy, "C1")
ax2.set(ylabel="diff(y)")
ax2.yaxis.label.set_color(p2.get_color())
ax2.tick_params(axis='y', colors=p2.get_color())

ax3 = ax.twinx()
ax3.spines.right.set_position(("axes", 1.2))
p3, = ax3.plot(x, sinx, "C2")
ax3.set(ylabel="sin(x)")
ax3.yaxis.label.set_color(p3.get_color())
ax3.tick_params(axis='y', colors=p3.get_color())

plt.tight_layout()
plt.show()

x = np.linspace(0,10,101)
y = np.sin(x)

ax = plt.subplot()
ax.plot(x,y)
ax.set_xlabel('angle [rad]')

secax = ax.secondary_xaxis('top', functions=(np.rad2deg, np.deg2rad))
secax.set_xlabel('angle [degrees]')
plt.show()

x = np.linspace(-5,5,100)
ys = [np.sin(x+i) for i in range(5)]

fig,axes = plt.subplots(2,2,sharex=True, sharey=True)

axes = axes.reshape(-1)
for i in range(4):
    axes[i].plot(x, ys[i])

plt.show()

fig = plt.figure()
ax3 = fig.add_subplot(223)
ax3.plot(x,ys[2])

ax1 = fig.add_subplot(221, sharex=ax3)
ax1.plot(x,ys[0])
ax1.tick_params(axis="x", labelbottom=False)

ax4 = fig.add_subplot(224, sharey=ax3)
ax4.plot(x,ys[3])
ax4.tick_params(axis="y", labelleft=False)

ax2 = fig.add_subplot(222, sharex=ax4, sharey=ax1)
ax2.plot(x,ys[1])
ax2.tick_params(axis="x", labelbottom=False)
ax2.tick_params(axis="y", labelleft=False)

plt.show()