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from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np
fig = plt.figure()
#ax = Axes3D(fig)
#X = np.arange(-20, 20, 0.5)
#xlen = len(X)
#Y = np.arange(-20, 20, 0.5)
#ylen = len(Y)
#X, Y = np.meshgrid(X, Y)
#fig = plt.figure()
#for i in [-0.3]:
# j = i*i
# Z = 2*X*Y*i*(4-j) + (X*X+Y*Y)*j*(6-2*j)
# surf = ax.plot_surface(X, Y, Z, rstride=1, cstride=1,
# linewidth=0, antialiased=True)
ax = fig.add_subplot(1,1,1)
x = np.arange(-1,5,0.1)
y = (((4*x -24)*x +36)*x-16)*x
z = 0*x
ax.plot(x,y,x,z,antialiased=True)
plt.show()
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