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pylab_examples example code: image_demo2.pyΒΆ

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#!/usr/bin/env python

from __future__ import print_function
from pylab import *
import matplotlib.cbook as cbook

w, h = 512, 512

datafile = cbook.get_sample_data('ct.raw.gz', asfileobj=True)
s = datafile.read()
A = fromstring(s, uint16).astype(float)
A *= 1.0/max(A)
A.shape = w, h

extent = (0, 25, 0, 25)
im = imshow(A, cmap=cm.hot, origin='upper', extent=extent)

markers = [(15.9, 14.5), (16.8, 15)]
x,y = zip(*markers)
plot(x, y, 'o')

title('CT density')

if 0:
    x = asum(A,0)
    bar(arange(w), x)
    setp(gca(), 'xticklabels', [])


Keywords: python, matplotlib, pylab, example, codex (see Search examples)