matplotlib 3d表面图未显示

时间:2015-04-09 19:51:44

标签: python matplotlib plot 3d surface

我正在尝试用matplotlib制作一个简单的3D曲面图,但最后没有显示该图。我只得到一个空的3D轴。 这就是我做的事情

from mpl_toolkits.mplot3d import Axes3D

x= np.arange(1, 100, 1)

y= np.arange(1, 100, 1)

z= np.arange(1, 100, 1)

fig= figure()

ax= fig.add_subplot(111, projection ='3d')

ax.plot_surface(x, y, z, rstride= 5, cstride= 5)

show()

所以我得到了这个

enter image description here

有什么建议吗?

2 个答案:

答案 0 :(得分:2)

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import axes3d, Axes3D
from scipy.interpolate import griddata

x= np.arange(1, 100, 1)
y= np.arange(1, 100, 1)
z= np.arange(1, 100, 1)
fig = plt.figure()
ax = fig.gca(projection='3d')
xi = np.linspace(x.min(), x.max(), 50)
yi = np.linspace(y.min(), y.max(), 50)
zi = griddata((x, y), z, (xi[None, :], yi[:, None]), method='nearest')    # create a uniform spaced grid
xig, yig = np.meshgrid(xi, yi)
surf = ax.plot_wireframe(X=xig, Y=yig, Z=zi, rstride=5, cstride=3, linewidth=1)   # 3d plot
plt.show()

enter image description here

答案 1 :(得分:1)

您没有绘制曲面:xyz需要是2D数组。请看这个例子:http://matplotlib.org/examples/mplot3d/surface3d_demo.html