We also have the ability to add contours to a 3D plot. Try the following code:
# Contour plot (filled/unfilled)fig = plt.figure()ax = fig.add_subplot(111, projection='3d')x,y = np.meshgrid(np.arange(-10,10,0.5), np.arange(-10,10,0.5))r = np.linalg.norm([x,y], axis=0)goldstone = -200*np.power(r,2)+np.power(r,4)ax.contour(x,y,goldstone)
From this code, we get a nice set of contours in 3D, as shown here:
By adding the letter f ahead of contour, we get 3D filled contours, as shown here:
Hence, we see that, ...
