from matplotlib import pyplot as plt
import numpy as np
from mpl_toolkits.mplot3d import Axes3D

from matplotlib import pyplot as plt
import numpy as np
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = Axes3D(fig)
len = 8;
step = 0.4;


def build_layer(z_value):
 x = np.arange(-len, len, step);
 y = np.arange(-len, len, step);
 z1 = np.full(x.size, z_value/2)
 z2 = np.full(x.size, z_value/2)
 z1, z2 = np.meshgrid(z1, z2)
 z = z1 + z2;

 x, y = np.meshgrid(x, y)
 return (x, y, z);

def build_gaussian_layer(mean, standard_deviation):
 x = np.arange(-len, len, step);
 y = np.arange(-len, len, step);
 x, y = np.meshgrid(x, y);
 z = np.exp(-((y-mean)**2 + (x - mean)**2)/(2*(standard_deviation**2)))
 z = z/(np.sqrt(2*np.pi)*standard_deviation);
 return (x, y, z);

# 具体函数方法可用 help(function) 查看，如：help(ax.plot_surface)
x1, y1, z1 = build_layer(0.2);
ax.plot_surface(x1, y1, z1, rstride=1, cstride=1, color='green')

x5, y5, z5 = build_layer(0.15);
ax.plot_surface(x5, y5, z5, rstride=1, cstride=1, color='pink')

# x2, y2, z2 = build_layer(-0.26);
# ax.plot_surface(x2, y2, z2, rstride=1, cstride=1, color='yellow')
#
# x6, y6, z6 = build_layer(-0.22);
# ax.plot_surface(x6, y6, z6, rstride=1, cstride=1, color='pink')

# x4, y4, z4 = build_layer(0);
# ax.plot_surface(x4, y4, z4, rstride=1, cstride=1, color='purple')

x3, y3, z3 = build_gaussian_layer(0, 1)
ax.plot_surface(x3, y3, z3, rstride=1, cstride=1, cmap='rainbow')
plt.show()


这是第三张图片的代码

import numpy as np
import matplotlib.pyplot as plt
import mpl_toolkits.mplot3d

x, y = np.mgrid[-1:1:20j, -1:1:20j]
z = x * np.exp(-x ** 2 - y ** 2)

ax = plt.subplot(111, projection='3d')
ax.plot_surface(x, y, z, rstride=2, cstride=1, cmap=plt.cm.coolwarm, alpha=0.8)
ax.set_xlabel('x')
ax.set_ylabel('y')
ax.set_zlabel('z')

plt.show()