# scale only shows the spike. Z1 = np.exp(-X**2 - Y**2) Z2 = np.exp(-(X * 10)**2 - (Y * 10)**2) ...
# Synthetic dataset consisting of two humps, one negative and one positive, # the positive with 8-times the amplitude. # Linearly, the negative hump is almost invisible, # and it is very difficult to ...