/usr/share/pyshared/matplotlib/tests/test_png.py is in python-matplotlib 1.1.1~rc1+git20120423-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | from matplotlib.testing.decorators import image_comparison, knownfailureif
from matplotlib import pyplot as plt
import matplotlib.cm as cm
import glob
import os
@image_comparison(baseline_images=['pngsuite'], extensions=['png'])
def test_pngsuite():
dirname = os.path.join(
os.path.dirname(__file__),
'baseline_images',
'pngsuite')
files = glob.glob(os.path.join(dirname, 'basn*.png'))
files.sort()
fig = plt.figure(figsize=(len(files), 2))
for i, fname in enumerate(files):
data = plt.imread(fname)
cmap = None # use default colormap
if data.ndim==2:
# keep grayscale images gray
cmap = cm.gray
plt.imshow(data, extent=[i,i+1,0,1], cmap=cmap)
plt.gca().get_frame().set_facecolor("#ddffff")
plt.gca().set_xlim(0, len(files))
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