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"""
Compare Image Tests
-------------------
This script compares all the mis-matching images found when running
$ nosetests astroML_fig_tests
The result of running this script is an html page comparing each output file
to the baseline result, showing only the ones with a mismatch above the
threshold specified in astroML_fig_tests.
"""
import os
TABLE = """
<html>
<table>
{rows}
</table>
</html>
"""
ROW = """
<tr>
<td align="center">{0}</td>
<td align="center">actual</td>
<td align="center">baseline</td>
</tr>
<tr>
<td><img src="{1}" width="100%"></td>
<td><img src="{2}" width="100%"></td>
<td><img src="{3}" width="100%"></td>
</tr>
"""
baseline = "astroML_fig_tests/baseline/book_figures"
results = "astroML_fig_tests/results/book_figures"
figlist = []
for chapter in os.listdir(results):
if not os.path.isdir(os.path.join(results,chapter)):
continue
for pyfile in os.listdir(os.path.join(results,chapter)):
if pyfile.endswith('failed-diff.png'):
root = pyfile.split('-failed-diff')[0]
figlist.append((os.path.join("book_figures", chapter, root + ".py"),
os.path.join(results, chapter, pyfile),
os.path.join(results, chapter, root + '.png'),
os.path.join(baseline, chapter, root + '.png')))
outfile = "_compare_images.html"
with open(outfile, 'w') as f:
f.write(TABLE.format(rows = '\n'.join([ROW.format(*figs, width="90%")
for figs in figlist])))
import webbrowser
webbrowser.open_new("file://localhost" + os.path.abspath(outfile))
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