import scipy.io
import matplotlib.pyplot as plt
import matplotlib.ticker as mtick
from matplotlib import cm
from mpl_toolkits.mplot3d import Axes3D

data = scipy.io.loadmat('test.mat')

X = data['X']
T = data['T']
U = data['U']


fig = plt.figure()
ax = fig.gca(projection='3d')

surf = ax.plot_wireframe(X, T, U, rstride=10000,color="black", cstride=1,linewidth=1.5)