from __future__ import print_function
import matplotlib.pyplot as plt
import matplotlib.cbook as cbook
import numpy as np
# data are 256x256 16 bit integers
dfile = cbook.get_sample_data('s1045.ima.gz')
im = np.fromstring(dfile.read(), np.uint16).astype(float)
im.shape = 256, 256

plt.imshow(im, cmap=plt.cm.gray)
plt.axis('off')

plt.show()