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FIX: resolution of imshow for floats and 2-D greyscale PIL images #10613

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Merged
tacaswell merged 5 commits into from
Mar 3, 2018
Merged

FIX: resolution of imshow for floats and 2-D greyscale PIL images #10613

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104e624
FIX: fix big number color resolution issue
jklymak Feb 26, 2018
4529d6f
TST: test for big floats in array being clipped properly if clim reset
jklymak Feb 26, 2018
2dd9d54
Make clip and force vmin and vmax to float64
jklymak Feb 26, 2018
332edf0
FIX convert 2-d PIL image
jklymak Feb 27, 2018
e0fab0d
TST convert 2-d PIL image
jklymak Feb 27, 2018
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TST: test for big floats in array being clipped properly if clim reset
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@jklymak
jklymak committed Feb 26, 2018
commit 4529d6f8106527817f1af87a1208e76a4ffa4ce0
Binary file added lib/matplotlib/tests/baseline_images/test_image/imshow_bignumbers_real.png
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13 changes: 13 additions & 0 deletions lib/matplotlib/tests/test_image.py
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Original file line number Diff line number Diff line change
Expand Up @@ -856,6 +856,19 @@ def test_imshow_bignumbers():
pc = ax.imshow(img)
pc.set_clim(0, 5)


@image_comparison(baseline_images=['imshow_bignumbers_real'],
remove_text=True, style='mpl20',
extensions=['png'])
def test_imshow_bignumbers_real():
# putting a big number in an array of integers shouldn't
# ruin the dynamic range of the resolved bits.
fig, ax = plt.subplots()
img = np.array([[2., 1., 1.e22],[4., 1., 3.]])
pc = ax.imshow(img)
pc.set_clim(0, 5)


@pytest.mark.parametrize(
"make_norm",
[colors.Normalize,
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