matplotlib绘制两点间连线的几种方法实现

import numpy as np
import matplotlib.pyplot as plt
 
# create a dataset
points = np.linspace(-5, 5, 256)
y1 = np.tanh(points) + 0.5
y2 = np.sin(points) - 0.2
 
# create a canvas
fig, axe = plt.subplots(figsize=(7, 3.5), dpi=300)
 
# add data to canvas 
axe.plot(points, y1)
axe.plot(points, y2)
 
# show the figure
fig.savefig('output/to.png')
 
plt.close(fig)

import matplotlib.pyplot as plt
import numpy as np
 
x = np.linspace(-3, 3, 256)
y = np.sin(x)
 
plt.plot(x, y)

import matplotlib.pyplot as plt
import numpy as np
 
x = np.linspace(-3, 3, 256)
y = np.sin(x)
 
ax = plt.subplot()
ax.plot(x, y)

import matplotlib.pyplot as plt
import numpy as np
 
x = np.linspace(-3, 3, 256)
y = np.sin(x)
 
fig = plt.figure(dpi=300)
ax = fig.add_subplot(111)
ax.plot(x, y)
fig.savefig('output/to.png')
plt.close(fig)