import matplotlib
matplotlib.use('Agg')
from mpl_toolkits.mplot3d import axes3d
import matplotlib.pyplot as plt

fig = plt.figure(figsize=(4, 3))
ax = fig.add_subplot(111, projection='3d')
X, Y, Z = axes3d.get_test_data(0.05)
matplotlib.rcParams['font.size'] = 7
ax.plot_wireframe(X, Y, Z, rstride=10, cstride=10)

fig.savefig('t_' + matplotlib.__version__ + '.png')