.. _pylab_examples-image_demo2: pylab_examples example code: image_demo2.py =========================================== .. plot:: /home/tcaswell/src/p/matplotlib/doc/mpl_examples/pylab_examples/image_demo2.py :: from __future__ import print_function import matplotlib.pyplot as plt import numpy as np import matplotlib.cbook as cbook w, h = 512, 512 datafile = cbook.get_sample_data('ct.raw.gz', asfileobj=True) s = datafile.read() A = np.fromstring(s, np.uint16).astype(float) A *= 1.0 / max(A) A.shape = w, h extent = (0, 25, 0, 25) im = plt.imshow(A, cmap=plt.cm.hot, origin='upper', extent=extent) markers = [(15.9, 14.5), (16.8, 15)] x, y = zip(*markers) plt.plot(x, y, 'o') plt.title('CT density') plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)