In [2]:
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
import matplotlib.pyplot as plt
import numpy as np
%matplotlib inline
In [18]:
step = 0.04
maxval = 1.0

r = np.linspace(0, 1.25, 50)
p = np.linspace(0, 2*np.pi, 50)
R, P = np.meshgrid(r, p)
X, Y = R*np.cos(P), R*np.sin(P)

Z = R**2 * np.cos(2*P)

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.YlGnBu_r,
                       linewidth=0, antialiased=False)
Out[18]:
<mpl_toolkits.mplot3d.art3d.Poly3DCollection at 0x10c5038d0>
In [ ]: