简单函数图像画图matplot实现

1.y = ax + b

# -*- coding: utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(-5, 5, 1000)

y = x + 1

plt.plot(x, y)

plt.show()

2、z = ax + by + c

# -*- coding: utf-8 -*-
import numpy as np
from pylab import *
from mpl_toolkits.mplot3d import Axes3D
fig = figure()
ax = Axes3D(fig)
X = np.arange(-4, 4, 0.25)
Y = np.arange(-4, 4, 0.25)
X, Y = np.meshgrid(X, Y)
Z = X + Y + 1

ax.plot_surface(X, Y, Z)

show()