15 lines
305 B
Python
15 lines
305 B
Python
from mpl_toolkits.mplot3d import Axes3D
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import matplotlib.pyplot as plt
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import numpy as np
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from matplotlib import cm
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fig=plt.figure()
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ax=fig.add_subplot(111,projection='3d')
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u=np.linspace(-1,1,100)
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x,y=np.meshgrid(u,u)
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z=x**2+y**2
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ax.plot_surface(x,y,z,rstride=4,cstride=4,cmap=cm.YlGnBu_r)
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plt.show() |