matplotlib - Python plot of a piecewise defined surface -

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i trying make 3d plot of surface defined in different ways different regions. example, take f(x,y) defined 1 if x > y , x^2 if x <= y.

i defined f logical operators, , tried plot "plot_surface" function, evaluating in grid. unfortunately, got error saying "the truth value of array more 1 element ambiguous".

do know way of solving this?

taking link posted serenity need define f using np.piecewise

import numpy np import matplotlib.pyplot plt mpl_toolkits.mplot3d import axes3d, axes3d   num_steps = 500 x_arr = np.linspace(0,100, num_steps) y_arr = np.linspace(0,100, num_steps)  def zfunc(x, y):     return np.piecewise(x, [x>y, x<=y], [lambda x: 1, lambda x: x**2])  x,y = np.meshgrid(x_arr, y_arr) z =zfunc(x,y)  fig=plt.figure() ax=fig.add_subplot(1,1,1,projection='3d') ax.set_xlabel('x axis') ax.set_ylabel('y axis')  ax.plot_surface(x,y,z,cmap='viridis') #cmap make easier see  ax.view_init(30, 70) plt.show()

giving plot: enter image description here


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